CONCLUSIONS1. Two Recent species, each polytypic with eight subspecies, and five fossil species are recognized.2. The phyletic trends in the genusBaiomyshave been from an ancestral stock that possessed relatively brachydont teeth having raised cingular ridges and orthodont to proödont incisors, to species having hypsodont teeth with reduced cingular ridges and retrodont incisors.3. Reduction of cingular ridges in pygmy mice is associated with an existence in open grassland (more xeric than mesic), whereas, the presence of cingular ridges is associated with an existence in a savannah habitat (more mesic than xeric).4. Shifts of geographical range of populations of pygmy mice at and near the periphery of their geographic range may account for the differentiation of the extinct species.5. The two living species,B. musculusandB. taylori, are seemingly derived from a common ancestor that in morphological structure was intermediate betweenB. minimusandB. musculus.6. The living species of pygmy mice resulted from a geographic separation, perhaps occurring in the Iowan glacial period (See De Terra, 1949:51) in the transverse volcanic zone of central México.7. The two species are now sympatric in west central México, where morphological characters (size and shape of body and length of skull) differ most. Where the two species are allopatric, these same morphological characters differ least.8. This is a documented instance of character displacement in mammals.9. On the basis of internal morphological characters studied (auditory ossicles, hyoid apparatus, and baculum),Baiomysseems to be more closely related to a South American hesperomine, perhapsCalomys, than to any North American cricetine.10. Pygmy mice were more widely distributed in the past than they are at present. Part of the ancestral stock of the pygmy mice may have emigrated from North America into South America in a brief period in the Pliocene; if so, it is easy to understand why certain South American hesperomines resembleBaiomys.11. The combination of morphological and behavioral characters in the living pygmy mice warrants generic status for them. IfBaiomyswere treated as a subgenus of the genusPeromyscus, there would be adequate justification for including in the genusPeromyscusa number of other genera, some of them occurring in South America. Such lumping of genera would reduce our understanding of the natural relationships among this group of cricetine rodents.LITERATURE CITEDAllen, J. A.1903. List of mammals collected by Mr. J. H. Batty in New Mexico and Durango, with descriptions of new species and subspecies. Bull. Amer. Mus. Nat. Hist., 19:587-612, November 12.Allen, J. A., andChapman, F. M.1897. On a collection of mammals from Jalapa and Las Vigas, state of Veracruz. Bull. Amer. Mus. Nat. Hist., 9:197-208, June 16.Axelrod, D. I.1950. Evolution of the desert vegetation in western North America. Carnegie Inst. Washington (Contrib. Paleo.), Publ. 590(6):215-306, 4 figs., 3 pls., 1 table, December 27.Bailey, V.1905. Biological survey of Texas. N. Amer. Fauna, 25:1-222, 16 pls., 24 figs., October 24.Baker, R. H.1951. Mammals from Tamaulipas México. Univ. Kansas Publ., Mus. Nat. Hist., 5:207-218, December 15.Blair, W. F.1941. Observations on the life history ofBaiomys taylori subater. Jour. Mamm., 22:378-383, 1 fig., November 14.1942. Systematic relationships ofPeromyscusand several related genera as shown by the baculum. Jour. Mamm., 23:196-204, 2 figs., 1 table, May 14.1952. Mammals of the Tamaulipan Biotic Province in Texas. Texas Jour. Sci., 4:230-250, 1 fig., 2 tables, June 30.1953. Population dynamics of rodents and other small mammals. Advances in Genetics, 5:1-41, 1 table.Blair, W. F., andBlossom, P. M.1948. Variation in the pygmy mouse (Baiomys taylori) from Texas and Arizona. Contrib. Lab. Vert. Biol., Univ. Michigan, 40:1-7, 3 tables, March.Blossom, P. M., andBurt, W. H.1942. A new race of pygmy mouse (Baiomys) from Arizona. Occas. Papers, Univ. Michigan, 465:1-4, October 8.Booth, E. S.1957. Mammals collected in Mexico from 1951 to 1956 by the Walla Walla College Museum of Natural History. Walla Walla College Publs., Dept. Biol. Sci. and Biol. Station, 20:1-19, 4 unnumbered figures, July 10.Brown, W. L.1958. Some zoological concepts applied to problems in evolution of the hominid lineage. Amer. Scientist, 46:151-158, 1 fig., June.Brown, W. L., Jr., andWilson, E. O.1956. Character displacement. Soc. Syst. Zool., 5:49-64, 6 figs., June.Burt, W. H.1936. A study of the baculum in the generaPerognathusandDipodomys. Jour. Mamm., 17:145-156, 6 figs., 2 tables, May 14.1938. Faunal relationships and geographic distribution of mammals in Sonora, México. Miscl. Publ. Mus. Zool., Univ. Michigan, 39:1-77, 2 tables, 26 maps, February 15.Clark, F. H.1941. Correlation and body proportions in mature mice of the genusPeromyscus. Jour. Genetics, 26:283-300, 8 tables, May.Collins, H. H.1918. Studies of normal moult and of artificially induced regeneration of pelage inPeromyscus. Jour. Exper. Zool., 27:73-95, 3 figs., 2 pls., October.1924. Studies of the pelage phases and of the nature of color variations in mice of the genusPeromyscus. Jour. Exper. Zool., 38:45-107, 57 figs.Dalquest, W. W.1953. Mammals of the Mexican state of San Luis Potosí. Louisiana State Univ. Studies, Biol. Ser., 1:1-229, 1 fig., December 28.Davis, W. B.1944. Notes on Mexican mammals. Jour. Mamm., 25:370-403, 1 fig., 3 tables, November 12.Davis, W. B., andRussell, J. R., Jr.1954. Mammals of the Mexican state of Morelos. Jour. Mamm., 35:63-80, February 10.Deterra, H., Romero, J.,andSteward, T. D.1949. Tepexpan Man. Viking Fund Publ. in Anthropology, 11:1-160, 22 figs., 37 pls., 10 tables.Dice, L. R.1943. The biotic provinces of North America. Univ. Michigan Press, Ann Arbor, viii + 78 pp., 1 map.Dice, L. R., andLeraas, H. J.1936. A graphic method for comparing several sets of measurements. Contrib. Lab. Vert. Genetics, Univ. Michigan, 3:1-3, 1 fig., July.Dobzhansky, T.1951. Genetics and the origin of species. Columbia Univ. Press, x + 364 pp., 23 figs., 15 tables.Duellman, W. E.1958. A monographic study of the colubrid snake genusLeptodeira. Bull. Amer. Mus. Nat. Hist., 114(1):1-152, 25 figs., 31 pls., 25 maps, 30 tables, February 24.Dunn, E. R.1940. Some aspects of herpetology in lower Central America. Trans. New York Acad. Sci., 2:156-158, April.Ellerman, J. R.1941. The families and genera of living rodents with a list of named forms (1758-1936). British Museum (Nat. Hist.), London, 2: xii + 690, 50 figs., March 21.Felten, H.1958. Nagetiere (Mammalia, Rodentia) aus El Salvador. Senckenbergiana Biologica, 39:133-144, August 30.Findley, J. S.1955. Speciation of the wandering shrew. Univ. Kansas Publ., Mus. Nat. Hist., 9:1-68, 18 figs., 1 table, December 10.Gazin, C. Lewis1942. The late Cenozoic vertebrate faunas from the San Pedro Valley, Ariz. Proc. U. S. Nat. Mus., 92(3155):475-518.Gidley, J. W.1922. Preliminary report on fossil vertebrates of the San Pedro Valley, Arizona, with descriptions of new species of Rodentia and Lagomorpha. U. S. Geol. Surv. Prof. Paper, 131:119-131, 2 pls., March 15.Goldman, E. A.1951. Biological investigations in México. Smiths. Miscl. Coll., 115: xiii + 476, frontispiece, 71 pls., 1 map, July 31.Goldman, E. A.andMoore, R. T.1945. The biotic provinces of México. Jour. Mamm., 26:347-360, 1 fig., November 14.Goodwin, G. G.1934. Mammals collected by A. W. Anthony in Guatemala, 1924-1928. Bull. Amer. Mus. Nat. Hist., 68:1-60, pls. 1-5, December 12.1942. Mammals of Honduras. Bull. Amer. Mus. Nat. Hist., 79:107-195, May 29.1959. A new pygmy mouse of the genusBaiomysfrom Oaxaca, Mexico. Amer. Mus. Novit., 1929:1-2, March 5.Hall, E. R.1959. Geographic distribution of contemporary organisms, pp. 371-373,inZoogeography. Publ., Amer. Assoc. Adv. Sci., 55:x + 509 pp. January 19.Hall, E. R., andKelson, K. R.1959. The mammals of North America. 2 Vols., xxx + 1083 pp. (79 pp. index), 553 figs., 500 maps, March 31, 1959.Hall, E. R., andVilla-R., B.1949. An annotated check list of the Mammals of Michoacán, México. Univ. Kansas Publ., Mus. Nat. Hist., 1:431-472, pls. 4-5, 1 fig., December 27.Hershkovitz, P.1944. A systematic review of the neotropical water rats of the genusNectomys(Cricetinae). Miscl. Publ. Mus. Zool., Univ. Michigan, 58:1-101, 4 pls., 5 figs., 2 maps, 19 tables, January 4.1955. South American marsh rats GenusHolochiluswith a summary of sigmodont rodents. Fieldiana-Zool., Chicago Nat. Hist. Mus., 37:639-673, 6 figs., 29 pls., 5 tables, June 19.1958. A geographical classification of neotropical mammals. Fieldiana-Zool., Chicago Nat. Hist. Mus., 36:583-620, 2 figs., 13 tables, July 11.Hibbard, C. W.1941. Paleoecology and correlation of the Rexroad Fauna from the upper Pliocene of southwestern Kansas, as indicated by the mammals. Univ. Kansas Sci. Bull., 27:79-104, 1 fig., December 15.1952. A contribution to the Rexroad Fauna. Trans. Kansas Acad. Sci., 55:196-208, 2 figs., June 18.1953. The saw rock canyon fauna and its stratigraphic significance. Papers, Michigan Acad. Sci., Arts and Letters, 38:387-411, 5 figs., April 27.1958. Summary of North American Pleistocene mammalian local faunas. Papers, Michigan Acad. Sci., Arts and Letters, 43:3-32, 1 table.Hoffmeister, D. F.1951. A taxonomic and evolutionary study of the pinon mouse,Peromyscus truei. Ill. Biol. Monogr., 21:x + 104, 5 pls., 24 figs., 7 tables, November 12.1956. Mammals of the Graham (Pinaleno) Mountains, Arizona. Amer. Midland Nat., 55:257-288, 7 figs., 1 table, April.Hooper, E. T.1947. Notes on Mexican mammals. Jour. Mamm., 28:40-57, February 15.1949. Faunal relationships of recent North American rodents. Miscl. Publ. Mus. Zool., Univ. Michigan, 72:1-28, 5 tables, May 20.1952a. Notes on the pygmy mouse (Baiomys), with description of a new subspecies from México. Jour. Mamm., 33:90-97, 3 figs., February 18.1952b. A systematic review of the harvest mice (genusReithrodontomys) of Latin America. Miscl. Publ. Mus. Zool., Univ. Michigan, 77:1-255, 9 pls., 24 figs., 12 maps, 7 tables, January 16.1953. Notes on the mammals of Tamaulipas, México. Occas. Papers Mus. Zool., Univ. Michigan, 544:1-12, March 25.1955a. Extra teeth in the pygmy mouse,Baiomys musculus. Jour. Mamm., 36:298-299, May 26.1955b. Notes on Mammals of western México. Occas. Papers Mus. Zool., Univ. Michigan, 565:1-26, November 9.1957. Dental patterns in mice of the GenusPeromyscus. Miscl. Publ. Mus. Zool., Univ. Michigan, 99:1-59, 24 figs., 3 tables, March 28.1958. The male phallus in mice of the genusPeromyscus. Miscl. Publ. Mus. Zool., Univ. Michigan, 105:1-24, 1 fig., 24 pls., 1 table, December 29.Hunsaker, D.,Raun, G. G., andSwindells, J. E.1959. Range expansion ofBaiomys tayloriin Texas. Jour. Mamm., 40:477-478, August 20.Koopman, K. F.1950. Natural selection for reproductive isolation betweenDrosophila pseudoobscuraandDrosophila persimilis. Evolution, 4:135-148, 3 figs., 7 tables, June.Lack, D.1944. Ecological aspects of species formation in passerine birds. Ibis, 86:260-286, July.Layne, James N.1959. Growth and development of the eastern harvest mouse,Reithrodontomys humulis. Bull. Florida State Mus., 4:61-82, 5 figs., April 27.Leopold, A. S.1950. Vegetation zones of México. Ecol., 31:507-518, 1 fig., 1 table, October.Lowery, G. H., andDalquest, W. W.1951. Birds from the state of Veracruz, México. Univ. Kansas Publ., Mus. Nat. Hist., 3:531-649, 7 figs., 2 tables, October 10.Lukens, P. W., Jr.1955. The mammals of the Chilpancingo area of the Mexican state of Guerrero. Unpublished Master's dissertation, Texas Agricultural and Mechanical College of Texas. 209 pp.Mayr, E.1949. Speciation and selection. Proc. Amer. Phil. Soc., 93:514-519, December.Mearns, E. A.1907. Mammals of the Mexican boundary of the United States … Pt. 1, Families Didelphidae to Muridae. Bull. U. S. Nat. Mus., 56:xv + 530, 13 pls., 126 figs., numerous tables, April 13.Merriam, C. Hart1892. Descriptions of new mammals collected by E. W. Nelson in the states of Colima and Jalisco, México. Proc. Biol. Soc. Washington, 7:164-174, September 29.Moore, R. T.1945. The transverse volcanic biotic province of central México and its relationship to adjacent provinces. Trans. San Diego Soc. Nat. Hist., 10:217-236, 1 map, 4 tables, August 31.Osgood, W. H.1909. Revision of the mice of the American GenusPeromyscus. N. Amer. Fauna, 28:1-285, 8 pls., 12 figs., several tables, April 17.Packard, R. L.1958a. New subspecies of the rodentBaiomysfrom Central America. Univ. Kansas Publ., Mus. Nat. Hist., 9:397-404, 2 tables, December 19.1958b. The taxonomic status ofPeromyscus allexOsgood. Proc. Biol. Soc. Washington, 71:17-20, April 11.Ridgway, R.1912. Color standards and color nomenclature. Published by the author, Washington, D. C., iii + 43 pp., 53 pls.Rinker, G. C.1954. The comparative myology of the mammalian generaSigmodon,Oryzomys,Neotoma, andPeromyscus(Cricetinae), with remarks on their intergeneric relationships. Miscl. Publ. Mus. Zool., Univ. Michigan, 83:1-124, 18 figs., 2 tables, June 4.Russell, R. J., Jr.1952. A new subspecies of pygmy mouse,Baiomys musculus, from Morelos, México. Proc. Biol. Soc. Washington, 65:21-22, January 29.Sears, P. B.1955. Palynology in southern North America, Part 4: Pleistocene Climate in México. Bull. Geol. Soc. America, 66:521-530, 6 figs., 1 pl., 1 table, May.Simpson, G. G.1945. The principles of classification and a classification of mammals. Bull. Amer. Mus. Nat. Hist., 85:xvi + 350, October 5.1950. History of the fauna of Latin America. Amer. Sci., 38(3):361-389, 10 figs.Smith, H. M.1949. Herpetogeny in México and Guatemala. Ann. Association Amer. Geogr., 39:219-238, 1 fig., 1 table, September.Sprague, J. M.1941. A study of the hyoid apparatus of the cricetinae. Jour. Mamm., 22:296-310, 5 figs., August 14.Stickel, L. F., andStickel, W. H.1949. ASigmodonandBaiomyspopulation in ungrazed and unburned Texas prairie. Jour. Mamm., 30:141-150, 3 tables, May 23.Stuart, L. C.1954. A description of a subhumid corridor across northern central America, with comments on its herpetofaunal indicators. Contrib. Lab. Vert. Biol., Univ. Michigan, 65:1-26, 6 maps, 6 pls., March.Tamayo, Jorge L.1949. Atlas Geografico general de México, con cartas fisicas, biologicas, demograficas, sociales, economicas, y cartogramas, Mexico, 24 maps, December 12.Thomas, O.1888. On the small mammals of Duval County, Texas. Proc. Zool. Soc. London, pp. 443-450.True, F. W.1894. On the relationships of Taylor's Mouse,Sitomys taylori. Proc. U. S. Nat. Mus., 16:757-758, February 7.Twente, J. H., andBaker, R. H.1951. New records of mammals from Jalisco, México, from barn owl pellets. Jour. Mamm., 32:120-121, 1 table, February 15.Van Gelder, R. G.1959. A taxonomic revision of the spotted skunks (GenusSpilogale). Bull. Amer. Mus. Nat. Hist., 117(5):229-392, 47 figs., 32 tables, June 15.White, J. A.1951. A practical method for mounting the bacula of small mammals. Jour. Mamm., 32:125, February 15.1953. The baculum in the chipmunks of western North America. Univ. Kansas Publ., Mus. Nat. Hist., 5:611-631, 19 figs., December 1.Wilson, R. W.1937. Pliocene rodents of western North America. Carnegie Inst. Washington, Publ. 487:21-73, 2 figs., July 23.Wood, A. E., andWilson, R. W.1936. A suggested nomenclature for the cusps of the cheek teeth of rodents. Jour. Paleon., 10:388-391, 2 figs.Transmitted March 4, 1960.28-3030UNIVERSITY OF KANSAS PUBLICATIONSMUSEUM OF NATURAL HISTORYInstitutional libraries interested in publications exchange may obtain this series by addressing the Exchange Librarian, University of Kansas Library, Lawrence, Kansas. Copies for individuals, persons working in a particular field of study, may be obtained by addressing instead the Museum of Natural History, University of Kansas, Lawrence, Kansas. There is no provision for sale of this series by the University Library, which meets institutional requests, or by the Museum of Natural History, which meets the requests of individuals. However, when individuals request copies from the Museum, 25 cents should be included, for each separate number that is 100 pages or more in length, for the purpose of defraying the costs of wrapping and mailing.* An asterisk designates those numbers of which the Museum's supply (not the Library's supply) is exhausted. Numbers published to date, in this series, are as follows:Vol. 1.Nos. 1-26 and index. Pp. 1-638, 1946-1950.*Vol. 2.(Complete) Mammals of Washington. By Walter W. Dalquest. Pp. 1-444, 140 figures in text. April 9, 1948.Vol. 3.*1.The avifauna of Micronesia, its origin, evolution, and distribution. By Rollin H. Baker, Pp. 1-359, 16 figures in text. June 12, 1951.*2.A quantitative study of the nocturnal migration of birds. By George H. Lowery, Jr. Pp. 361-472, 47 figures in text. June 29, 1951.3.Phylogeny of the waxwings and allied birds. By M. Dale Arvey. Pp. 473-530, 49 figures in text, 13 tables. October 10, 1951.4.Birds from the state of Veracruz, Mexico. By George H. Lowery, Jr., and Walter W. Dalquest. Pp. 531-649, 7 figures in text, 2 tables. October 10, 1951.Index. Pp. 651-681.*Vol. 4.(Complete) American weasels. By E. Raymond Hall. Pp. 1-466, 41 plates, 31 figures in text. December 27, 1951.Vol. 5.Nos. 1-37 and index. Pp. 1-676, 1951-1953.*Vol. 6.(Complete) Mammals of Utah,taxonomy and distribution. By Stephen D. Durrant. Pp. 1-549, 91 figures in text, 30 tables. August 10, 1952.Vol. 7.*1.Mammals of Kansas. By E. Lendell Cockrum. Pp. 1-303. 73 figures in text, 37 tables. August 25, 1952.2.Ecology of the opossum on a natural area in northeastern Kansas. By Henry S. Fitch and Lewis L. Sandidge. Pp. 305-338, 5 figures in text. August 24, 1953.3.The silky pocket mice (Perognathus flavus) of Mexico. By Rollin H. Baker. Pp. 339-347, 1 figure in text, February 15, 1954.4.North American jumping mice (Genus Zapus). By Philip H. Krutzch. Pp. 349-472, 47 figures in text, 4 tables. April 21, 1954.5.Mammals from Southeastern Alaska. By Rollin H. Baker and James S. Findley. Pp. 473-477. April 21, 1954.6.Distribution of Some Nebraskan Mammals. By J. Knox Jones, Jr. Pp. 479-487. April 21, 1954.7.Subspeciation in the montane meadow mouse. Microtus montanus, in Wyoming and Colorado. By Sydney Anderson. Pp. 489-506, 2 figures in text. July 23, 1954.8.A new subspecies of bat (Myotis velifer) from southeastern California and Arizona. By Terry A. Vaughan. Pp. 507-512. July 23, 1954.9.Mammals of the San Gabriel mountains of California. By Terry A. Vaughan. Pp. 513-582. 1 figure in text, 12 tables. November 15, 1954.10.A new bat (Genus Pipistrellus) from northeastern Mexico. By Rollin H. Baker. Pp. 583-586. November 15, 1954.11.A new subspecies of pocket mouse from Kansas. By E. Raymond Hall. Pp. 587-590. November 15, 1954.12.Geographic variation in the pocket gopher, Cratogeomys castanops, in Coahuila, Mexico. By Robert J. Russell and Rollin H. Baker. Pp. 591-608. March 15, 1955.13.A new cottontail (Sylvilagus floridanus) from northeastern Mexico. By Rollin H. Baker. Pp. 609-612. April 8, 1955.14.Taxonomy and distribution of some American shrews. By James S. Findley. Pp. 613-618. June 10, 1955.15.The pigmy woodrat, Neotoma goldmani, its distribution and systematic position. By Dennis G. Rainey and Rollin H. Baker. Pp. 619-624, 2 figures in text. June 10, 1955.Index. Pp. 625-651.Vol. 8.1.Life history and ecology of the five-lined skink, Eumeces fasciatus. By Henry S. Fitch. Pp. 1-156, 26 figures in text. September 1, 1954.2.Myology end serology of the Avian Family Fringillidae, a taxonomic study. By William B. Stallcup. Pp. 157-211, 23 figures in text, 4 tables. November 15, 1954.3.An ecological study of the collared lizard (Crotaphytus collaris). By Henry S. Fitch. Pp. 213-274, 10 figures to text. February 10, 1956.4.A field study of the Kansas ant-eating frog, Gastrophryne olivacea. By Henry S. Fitch. Pp. 275-306, 9 figures in text. February 10, 1956.5.Check-list of the birds of Kansas. By Harrison E. Tordoff. Pp. 307-359, 1 figure in text. March 10, 1956.6.A population study of the prairie vole (Microtus ochrogaster) in northeastern Kansas. By Edwin P. Martin. Pp. 361-416, 19 figures in text. April 2, 1956.7.Temperature responses in free-living amphibians and reptiles of northeastern Kansas. By Henry S. Fitch. Pp. 417-476, 10 figures in text, 6 tables. June 1, 1956.8.Food of the crow, Corvus brachyrhynchos Brehm, in south-central Kansas. By Dwight Platt. Pp. 477-498. 4 tables. June 8, 1956.9.Ecological observations on the woodrat, Neotoma floridana. By Henry S. Fitch and Dennis G. Rainey. Pp. 499-533, 3 figures in text. June 12, 1956.10.Eastern woodrat, Neotoma floridana: Life history and ecology. By Dennis G. Rainey. Pp. 535-646, 12 plates, 13 figures in text. August 15, 1956.Index. Pp. 647-675.Vol. 9.1.Speciation of the wandering shrew. By James S. Findley. Pp. 1-68, 18 figures in text. December 10, 1955.2.Additional records and extensions of ranges of mammals from Utah. By Stephen D. Durrant, M. Raymond Lee, and Richard M. Hansen. Pp. 69-80. December 10, 1955.3.A new long-eared myotis (Myotis evotis) from northeastern Mexico. By Rollin H. Baker and Howard J. Stains. Pp. 81-84. December 10, 1955.4.Subspeciation in the meadow mouse, Microtus pennsylvanicus, in Wyoming. By Sydney Anderson. Pp. 85-104, 2 figures in text. May 10, 1956.5.The condylarth genus Ellipsodon. By Robert W. Wilson. Pp. 105-116, 6 figures In text. May 19, 1956.6.Additional remains of the multituberculate genus Eucosmodon. By Robert W. Wilson. Pp. 117-123, 10 figures in text. May 19, 1956.7.Mammals of Coahuila, Mexico. By Rollin H. Baker. Pp. 125-335, 75 figures in text. June 15, 1956.8.Comments on the taxonomic status of Apodemus peninsulae, with description of a new subspecies from North China. By J. Knox Jones, Jr. Pp. 337-346, 1 figure in text, 1 table. August 15, 1956.9.Extensions of known ranges of Mexican bats. By Sydney Anderson. Pp. 347-351. August 15, 1956.10.A new bat (Genus Leptonycteris) from Coahuila. By Howard J. Stains. Pp. 353-356. January 21, 1957.11.A new species of pocket gopher (Genus Pappogeomys) from Jalisco, Mexico. By Robert J. Russell. Pp. 357-361. January 21, 1957.12.Geographic variation in the pocket gopher, Thomomys bottae, in Colorado. By Phillip M. Youngman. Pp. 363-385, 7, figures in text. February 21, 1958.13.New bog lemming (genus Synaptomys) from Nebraska. By J. Knox Jones, Jr. Pp. 385-388. May 12, 1958.14.Pleistocene bats from San Josecito Cave, Nuevo León, México. By J. Knox Jones, Jr. Pp. 389-396. December 19, 1958.15.New Subspecies of the rodent Baiomys from Central America. By Robert L. Packard. Pp. 397-404. December 19, 1958.16.Mammals of the Grand Mesa, Colorado. By Sydney Anderson. Pp, 405-414, 1 figure in text. May 20, 1959.17.Distribution, variation, and relationships of the montane vole, Microtus montanus. By Emil K. Urban. Pp. 415-511. 12 figures in text, 2 tables. August 1, 1959.18.Conspecificity of two pocket mice, Perognathus goldmani and P. artus. By E. Raymond Hall and Marilyn Bailey Ogilvie. Pp. 513-518, 1 map. January 14, 1960.19.Records of harvest mice, Reithrodontomys, from Central America, with description of a new subspecies from Nicaragua. By Sydney Anderson and J. Knox Jones, Jr. Pp. 519-529. January 14, 1960.20.Small carnivores from San Josecito Cave (Pleistocene), Nuevo León, México. By E. Raymond Hall. Pp. 531-538, 1 figure in text. January 14, 1960.21.Pleistocene pocket gophers from San Josecito Cave, Nuevo León, México. By Robert J. Russell. Pp. 539-548, 1 figure in text. January 14, 1960.22.Review of the insectivores of Korea. By J. Knox Jones, Jr., and David H. Johnson. Pp. 549-578. February 23, 1960.23.Speciation and evolution of the pygmy mice, genus Baiomys. By Robert L. Packard. Pp. 579-670, 4 plates, 12 figures in text. June 16, 1960.Index will follow.Vol. 10.1.Studies of birds killed in nocturnal migration. By Harrison B. Tordoff and Robert M. Mengel. Pp. 1-44, 6 figures in text, 2 tables. September 12, 1956.2.Comparative breeding behavior of Ammospiza caudacuta and A. maritime. By Glen E. Woolfenden. Pp. 45-75, 6 plates, 1 figure. December 20, 1956.3.The forest habitat of the University of Kansas Natural History Reservation. By Henry S. Fitch and Ronald R. McGregor. Pp. 77-127, 2 plates, 7 figures in text, 4 tables. December 31, 1956.4.Aspects of reproduction and development in the prairie vole (Microtus ochrogaster). By Henry S. Fitch, Pp. 129-161, 8 figures in text, 4 tables. December 19, 1957.5.Birds found on the Arctic slope of northern Alaska. By James W. Bee. Pp. 163-211, pls. 9-10, 1 figure in text. March 12, 1958.6.The wood rats of Colorado; distribution and ecology. By Robert B. Finley, Jr. Pp. 213-552, 34 plates, 8 figures in text, 35 tables. November 7, 1958.7.Home ranges and movements of the eastern cottontail in Kansas. By Donald W. Janes. Pp. 553-572, 4 plates, 3 figures in text. May 4, 1959.8.Natural history of the salamander, Aneides hardyi. By Richard F. Johnston and Schad Gerhard. Pp. 573-585. October 8, 1959.9.A new subspecies of lizard, Cnemidophorus sacki, from Michoacán, México. By William E. Duellman. Pp. 587-598, 2 figures in text. May 2, 1960.10.A taxonomic study of the Middle American Snake, Pituophis deppei. By William E. Duellman. Pp. 599-612, 1 plate, 1 figure in text. May 2, 1960.Index will follow.Vol. 11.1.The systematic status of the colubrid snake, Leptodeira discolor Günther. By William E. Duellman. Pp. 1-9, 4 figs. July 14, 1958.2.Natural history of the six-lined racerunner, Cnemidophorus sexlineatus. By Henry S. Fitch. Pp. 11-62, 9 figs., 9 tables. September 19, 1958.3.Home ranges, territories, and seasonal movements of vertebrates of the Natural History Reservation. By Henry S. Fitch, Pp. 68-326, 6 plates, 24 figures in text, 8 tables. December 12, 1958.4.A new snake of the genus Geophis from Chihuahua, Mexico. By John M. Legler. Pp. 327-334, 2 figures in text. January 28, 1959.5.A new tortoise, genus Gopherus, from north-central Mexico. By John M. Legler. Pp. 335-343. April 24, 1959.6.Fishes of Chautauqua, Cowley and Elk counties, Kansas. By Artie L. Metcalf. Pp. 345-400, 2 plates, 2 figures in text, 10 tables. May 6, 1959.7.Fishes of the Big Blue River Basin, Kansas. By W. L. Minckley. Pp. 401-442, 2 plates, 4 figures in text, 5 tables. May 8, 1959.8.Birds from Coahuila, México. By Emll K. Urban. Pp. 443-516. August 1, 1959.9.Description of a new softshell turtle from the southeastern United States. By Robert G. Webb. Pp. 517-525, 2 pls., 1 figure in text, August 14, 1959.10.Natural history of the ornate box turtle, Terrapene ornata ornata Agassiz. By John M. Legler. Pp. 527-669, 16 pls., 29 figures in text. March 7, 1960.Index will follow.Vol. 12.1.Functional morphology of three bats: Eumops, Myotis, Macrotus. By Terry A. Vaughan. Pp. 1-153, 4 plates, 24 figures in text. July 8, 1959.2.The ancestry of modern Amphibia: a review of the evidence. By Theodore H. Eaton, Jr. Pp. 155-180, 10 figures in text. July 10, 1959.3.The baculum in microtine rodents. By Sydney Anderson. Pp. 181-216, 49 figures in text. February 19, 1960.4.A new order of fishlike Amphibia from the Pennsylvanian of Kansas. By Theodore H. Eaton, Jr., and Peggy Lou Stewart. Pp. 217-240, 12 figures inv text. May 2, 1960.More numbers will appear In volume 12.Transcriber's NotesThe text presented is that of the original printed version except for the revisions below and a few assumed typesetting errors. The subsection headers under "VARIATION WITH AGE" were converted to italic only to match the rest. All other section title formatting retained as printed. The words Miscellaneous and Monograph were abbreviated as Miscl. and Mongr. respectively. Except for the two variant spellings of one word (Mexico/México) which were retained, the most prevalent form of accented words was used.Both decimal and whole and fractional part of numbers (i.e., 91/2) were retained as printed. Where a relative size as indicated for illustrations (i.e., × 3), they may not be correct for the displayed images as resolution of monitors vary. Each set of footnotes were placed at the end of each species account. The list of KU Publications were compiled after the article's text.Typographical CorrectionsPageCorrection591proödent ⇒ proödont694hesperomyines ⇒ hesperomines
CONCLUSIONS
1. Two Recent species, each polytypic with eight subspecies, and five fossil species are recognized.
2. The phyletic trends in the genusBaiomyshave been from an ancestral stock that possessed relatively brachydont teeth having raised cingular ridges and orthodont to proödont incisors, to species having hypsodont teeth with reduced cingular ridges and retrodont incisors.
3. Reduction of cingular ridges in pygmy mice is associated with an existence in open grassland (more xeric than mesic), whereas, the presence of cingular ridges is associated with an existence in a savannah habitat (more mesic than xeric).
4. Shifts of geographical range of populations of pygmy mice at and near the periphery of their geographic range may account for the differentiation of the extinct species.
5. The two living species,B. musculusandB. taylori, are seemingly derived from a common ancestor that in morphological structure was intermediate betweenB. minimusandB. musculus.
6. The living species of pygmy mice resulted from a geographic separation, perhaps occurring in the Iowan glacial period (See De Terra, 1949:51) in the transverse volcanic zone of central México.
7. The two species are now sympatric in west central México, where morphological characters (size and shape of body and length of skull) differ most. Where the two species are allopatric, these same morphological characters differ least.
8. This is a documented instance of character displacement in mammals.
9. On the basis of internal morphological characters studied (auditory ossicles, hyoid apparatus, and baculum),Baiomysseems to be more closely related to a South American hesperomine, perhapsCalomys, than to any North American cricetine.
10. Pygmy mice were more widely distributed in the past than they are at present. Part of the ancestral stock of the pygmy mice may have emigrated from North America into South America in a brief period in the Pliocene; if so, it is easy to understand why certain South American hesperomines resembleBaiomys.
11. The combination of morphological and behavioral characters in the living pygmy mice warrants generic status for them. IfBaiomyswere treated as a subgenus of the genusPeromyscus, there would be adequate justification for including in the genusPeromyscusa number of other genera, some of them occurring in South America. Such lumping of genera would reduce our understanding of the natural relationships among this group of cricetine rodents.
LITERATURE CITED
Allen, J. A.
1903. List of mammals collected by Mr. J. H. Batty in New Mexico and Durango, with descriptions of new species and subspecies. Bull. Amer. Mus. Nat. Hist., 19:587-612, November 12.
Allen, J. A., andChapman, F. M.
1897. On a collection of mammals from Jalapa and Las Vigas, state of Veracruz. Bull. Amer. Mus. Nat. Hist., 9:197-208, June 16.
Axelrod, D. I.
1950. Evolution of the desert vegetation in western North America. Carnegie Inst. Washington (Contrib. Paleo.), Publ. 590(6):215-306, 4 figs., 3 pls., 1 table, December 27.
Bailey, V.
1905. Biological survey of Texas. N. Amer. Fauna, 25:1-222, 16 pls., 24 figs., October 24.
Baker, R. H.
1951. Mammals from Tamaulipas México. Univ. Kansas Publ., Mus. Nat. Hist., 5:207-218, December 15.
Blair, W. F.
1941. Observations on the life history ofBaiomys taylori subater. Jour. Mamm., 22:378-383, 1 fig., November 14.
1942. Systematic relationships ofPeromyscusand several related genera as shown by the baculum. Jour. Mamm., 23:196-204, 2 figs., 1 table, May 14.
1952. Mammals of the Tamaulipan Biotic Province in Texas. Texas Jour. Sci., 4:230-250, 1 fig., 2 tables, June 30.
1953. Population dynamics of rodents and other small mammals. Advances in Genetics, 5:1-41, 1 table.
Blair, W. F., andBlossom, P. M.
1948. Variation in the pygmy mouse (Baiomys taylori) from Texas and Arizona. Contrib. Lab. Vert. Biol., Univ. Michigan, 40:1-7, 3 tables, March.
Blossom, P. M., andBurt, W. H.
1942. A new race of pygmy mouse (Baiomys) from Arizona. Occas. Papers, Univ. Michigan, 465:1-4, October 8.
1957. Mammals collected in Mexico from 1951 to 1956 by the Walla Walla College Museum of Natural History. Walla Walla College Publs., Dept. Biol. Sci. and Biol. Station, 20:1-19, 4 unnumbered figures, July 10.
1958. Some zoological concepts applied to problems in evolution of the hominid lineage. Amer. Scientist, 46:151-158, 1 fig., June.
Brown, W. L., Jr., andWilson, E. O.
1956. Character displacement. Soc. Syst. Zool., 5:49-64, 6 figs., June.
1936. A study of the baculum in the generaPerognathusandDipodomys. Jour. Mamm., 17:145-156, 6 figs., 2 tables, May 14.
1938. Faunal relationships and geographic distribution of mammals in Sonora, México. Miscl. Publ. Mus. Zool., Univ. Michigan, 39:1-77, 2 tables, 26 maps, February 15.
1941. Correlation and body proportions in mature mice of the genusPeromyscus. Jour. Genetics, 26:283-300, 8 tables, May.
1918. Studies of normal moult and of artificially induced regeneration of pelage inPeromyscus. Jour. Exper. Zool., 27:73-95, 3 figs., 2 pls., October.
1924. Studies of the pelage phases and of the nature of color variations in mice of the genusPeromyscus. Jour. Exper. Zool., 38:45-107, 57 figs.
1953. Mammals of the Mexican state of San Luis Potosí. Louisiana State Univ. Studies, Biol. Ser., 1:1-229, 1 fig., December 28.
1944. Notes on Mexican mammals. Jour. Mamm., 25:370-403, 1 fig., 3 tables, November 12.
Davis, W. B., andRussell, J. R., Jr.
1954. Mammals of the Mexican state of Morelos. Jour. Mamm., 35:63-80, February 10.
Deterra, H., Romero, J.,andSteward, T. D.
1949. Tepexpan Man. Viking Fund Publ. in Anthropology, 11:1-160, 22 figs., 37 pls., 10 tables.
1943. The biotic provinces of North America. Univ. Michigan Press, Ann Arbor, viii + 78 pp., 1 map.
Dice, L. R., andLeraas, H. J.
1936. A graphic method for comparing several sets of measurements. Contrib. Lab. Vert. Genetics, Univ. Michigan, 3:1-3, 1 fig., July.
1951. Genetics and the origin of species. Columbia Univ. Press, x + 364 pp., 23 figs., 15 tables.
1958. A monographic study of the colubrid snake genusLeptodeira. Bull. Amer. Mus. Nat. Hist., 114(1):1-152, 25 figs., 31 pls., 25 maps, 30 tables, February 24.
1940. Some aspects of herpetology in lower Central America. Trans. New York Acad. Sci., 2:156-158, April.
1941. The families and genera of living rodents with a list of named forms (1758-1936). British Museum (Nat. Hist.), London, 2: xii + 690, 50 figs., March 21.
1958. Nagetiere (Mammalia, Rodentia) aus El Salvador. Senckenbergiana Biologica, 39:133-144, August 30.
1955. Speciation of the wandering shrew. Univ. Kansas Publ., Mus. Nat. Hist., 9:1-68, 18 figs., 1 table, December 10.
1942. The late Cenozoic vertebrate faunas from the San Pedro Valley, Ariz. Proc. U. S. Nat. Mus., 92(3155):475-518.
1922. Preliminary report on fossil vertebrates of the San Pedro Valley, Arizona, with descriptions of new species of Rodentia and Lagomorpha. U. S. Geol. Surv. Prof. Paper, 131:119-131, 2 pls., March 15.
1951. Biological investigations in México. Smiths. Miscl. Coll., 115: xiii + 476, frontispiece, 71 pls., 1 map, July 31.
Goldman, E. A.andMoore, R. T.
1945. The biotic provinces of México. Jour. Mamm., 26:347-360, 1 fig., November 14.
1934. Mammals collected by A. W. Anthony in Guatemala, 1924-1928. Bull. Amer. Mus. Nat. Hist., 68:1-60, pls. 1-5, December 12.
1942. Mammals of Honduras. Bull. Amer. Mus. Nat. Hist., 79:107-195, May 29.
1959. A new pygmy mouse of the genusBaiomysfrom Oaxaca, Mexico. Amer. Mus. Novit., 1929:1-2, March 5.
1959. Geographic distribution of contemporary organisms, pp. 371-373,inZoogeography. Publ., Amer. Assoc. Adv. Sci., 55:x + 509 pp. January 19.
Hall, E. R., andKelson, K. R.
1959. The mammals of North America. 2 Vols., xxx + 1083 pp. (79 pp. index), 553 figs., 500 maps, March 31, 1959.
Hall, E. R., andVilla-R., B.
1949. An annotated check list of the Mammals of Michoacán, México. Univ. Kansas Publ., Mus. Nat. Hist., 1:431-472, pls. 4-5, 1 fig., December 27.
1944. A systematic review of the neotropical water rats of the genusNectomys(Cricetinae). Miscl. Publ. Mus. Zool., Univ. Michigan, 58:1-101, 4 pls., 5 figs., 2 maps, 19 tables, January 4.
1955. South American marsh rats GenusHolochiluswith a summary of sigmodont rodents. Fieldiana-Zool., Chicago Nat. Hist. Mus., 37:639-673, 6 figs., 29 pls., 5 tables, June 19.
1958. A geographical classification of neotropical mammals. Fieldiana-Zool., Chicago Nat. Hist. Mus., 36:583-620, 2 figs., 13 tables, July 11.
1941. Paleoecology and correlation of the Rexroad Fauna from the upper Pliocene of southwestern Kansas, as indicated by the mammals. Univ. Kansas Sci. Bull., 27:79-104, 1 fig., December 15.
1952. A contribution to the Rexroad Fauna. Trans. Kansas Acad. Sci., 55:196-208, 2 figs., June 18.
1953. The saw rock canyon fauna and its stratigraphic significance. Papers, Michigan Acad. Sci., Arts and Letters, 38:387-411, 5 figs., April 27.
1958. Summary of North American Pleistocene mammalian local faunas. Papers, Michigan Acad. Sci., Arts and Letters, 43:3-32, 1 table.
1951. A taxonomic and evolutionary study of the pinon mouse,Peromyscus truei. Ill. Biol. Monogr., 21:x + 104, 5 pls., 24 figs., 7 tables, November 12.
1956. Mammals of the Graham (Pinaleno) Mountains, Arizona. Amer. Midland Nat., 55:257-288, 7 figs., 1 table, April.
1947. Notes on Mexican mammals. Jour. Mamm., 28:40-57, February 15.
1949. Faunal relationships of recent North American rodents. Miscl. Publ. Mus. Zool., Univ. Michigan, 72:1-28, 5 tables, May 20.
1952a. Notes on the pygmy mouse (Baiomys), with description of a new subspecies from México. Jour. Mamm., 33:90-97, 3 figs., February 18.
1952b. A systematic review of the harvest mice (genusReithrodontomys) of Latin America. Miscl. Publ. Mus. Zool., Univ. Michigan, 77:1-255, 9 pls., 24 figs., 12 maps, 7 tables, January 16.
1953. Notes on the mammals of Tamaulipas, México. Occas. Papers Mus. Zool., Univ. Michigan, 544:1-12, March 25.
1955a. Extra teeth in the pygmy mouse,Baiomys musculus. Jour. Mamm., 36:298-299, May 26.
1955b. Notes on Mammals of western México. Occas. Papers Mus. Zool., Univ. Michigan, 565:1-26, November 9.
1957. Dental patterns in mice of the GenusPeromyscus. Miscl. Publ. Mus. Zool., Univ. Michigan, 99:1-59, 24 figs., 3 tables, March 28.
1958. The male phallus in mice of the genusPeromyscus. Miscl. Publ. Mus. Zool., Univ. Michigan, 105:1-24, 1 fig., 24 pls., 1 table, December 29.
Hunsaker, D.,Raun, G. G., andSwindells, J. E.
1959. Range expansion ofBaiomys tayloriin Texas. Jour. Mamm., 40:477-478, August 20.
1950. Natural selection for reproductive isolation betweenDrosophila pseudoobscuraandDrosophila persimilis. Evolution, 4:135-148, 3 figs., 7 tables, June.
1944. Ecological aspects of species formation in passerine birds. Ibis, 86:260-286, July.
1959. Growth and development of the eastern harvest mouse,Reithrodontomys humulis. Bull. Florida State Mus., 4:61-82, 5 figs., April 27.
1950. Vegetation zones of México. Ecol., 31:507-518, 1 fig., 1 table, October.
Lowery, G. H., andDalquest, W. W.
1951. Birds from the state of Veracruz, México. Univ. Kansas Publ., Mus. Nat. Hist., 3:531-649, 7 figs., 2 tables, October 10.
1955. The mammals of the Chilpancingo area of the Mexican state of Guerrero. Unpublished Master's dissertation, Texas Agricultural and Mechanical College of Texas. 209 pp.
1949. Speciation and selection. Proc. Amer. Phil. Soc., 93:514-519, December.
1907. Mammals of the Mexican boundary of the United States … Pt. 1, Families Didelphidae to Muridae. Bull. U. S. Nat. Mus., 56:xv + 530, 13 pls., 126 figs., numerous tables, April 13.
1892. Descriptions of new mammals collected by E. W. Nelson in the states of Colima and Jalisco, México. Proc. Biol. Soc. Washington, 7:164-174, September 29.
1945. The transverse volcanic biotic province of central México and its relationship to adjacent provinces. Trans. San Diego Soc. Nat. Hist., 10:217-236, 1 map, 4 tables, August 31.
1909. Revision of the mice of the American GenusPeromyscus. N. Amer. Fauna, 28:1-285, 8 pls., 12 figs., several tables, April 17.
1958a. New subspecies of the rodentBaiomysfrom Central America. Univ. Kansas Publ., Mus. Nat. Hist., 9:397-404, 2 tables, December 19.
1958b. The taxonomic status ofPeromyscus allexOsgood. Proc. Biol. Soc. Washington, 71:17-20, April 11.
1912. Color standards and color nomenclature. Published by the author, Washington, D. C., iii + 43 pp., 53 pls.
1954. The comparative myology of the mammalian generaSigmodon,Oryzomys,Neotoma, andPeromyscus(Cricetinae), with remarks on their intergeneric relationships. Miscl. Publ. Mus. Zool., Univ. Michigan, 83:1-124, 18 figs., 2 tables, June 4
1952. A new subspecies of pygmy mouse,Baiomys musculus, from Morelos, México. Proc. Biol. Soc. Washington, 65:21-22, January 29.
1955. Palynology in southern North America, Part 4: Pleistocene Climate in México. Bull. Geol. Soc. America, 66:521-530, 6 figs., 1 pl., 1 table, May.
1945. The principles of classification and a classification of mammals. Bull. Amer. Mus. Nat. Hist., 85:xvi + 350, October 5.
1950. History of the fauna of Latin America. Amer. Sci., 38(3):361-389, 10 figs.
1949. Herpetogeny in México and Guatemala. Ann. Association Amer. Geogr., 39:219-238, 1 fig., 1 table, September.
1941. A study of the hyoid apparatus of the cricetinae. Jour. Mamm., 22:296-310, 5 figs., August 14.
Stickel, L. F., andStickel, W. H.
1949. ASigmodonandBaiomyspopulation in ungrazed and unburned Texas prairie. Jour. Mamm., 30:141-150, 3 tables, May 23.
1954. A description of a subhumid corridor across northern central America, with comments on its herpetofaunal indicators. Contrib. Lab. Vert. Biol., Univ. Michigan, 65:1-26, 6 maps, 6 pls., March.
1949. Atlas Geografico general de México, con cartas fisicas, biologicas, demograficas, sociales, economicas, y cartogramas, Mexico, 24 maps, December 12.
1888. On the small mammals of Duval County, Texas. Proc. Zool. Soc. London, pp. 443-450.
1894. On the relationships of Taylor's Mouse,Sitomys taylori. Proc. U. S. Nat. Mus., 16:757-758, February 7.
Twente, J. H., andBaker, R. H.
1951. New records of mammals from Jalisco, México, from barn owl pellets. Jour. Mamm., 32:120-121, 1 table, February 15.
1959. A taxonomic revision of the spotted skunks (GenusSpilogale). Bull. Amer. Mus. Nat. Hist., 117(5):229-392, 47 figs., 32 tables, June 15.
1951. A practical method for mounting the bacula of small mammals. Jour. Mamm., 32:125, February 15.
1953. The baculum in the chipmunks of western North America. Univ. Kansas Publ., Mus. Nat. Hist., 5:611-631, 19 figs., December 1.
1937. Pliocene rodents of western North America. Carnegie Inst. Washington, Publ. 487:21-73, 2 figs., July 23.
Wood, A. E., andWilson, R. W.
1936. A suggested nomenclature for the cusps of the cheek teeth of rodents. Jour. Paleon., 10:388-391, 2 figs.
Transmitted March 4, 1960.
28-3030
UNIVERSITY OF KANSAS PUBLICATIONS
MUSEUM OF NATURAL HISTORY
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Transcriber's NotesThe text presented is that of the original printed version except for the revisions below and a few assumed typesetting errors. The subsection headers under "VARIATION WITH AGE" were converted to italic only to match the rest. All other section title formatting retained as printed. The words Miscellaneous and Monograph were abbreviated as Miscl. and Mongr. respectively. Except for the two variant spellings of one word (Mexico/México) which were retained, the most prevalent form of accented words was used.Both decimal and whole and fractional part of numbers (i.e., 91/2) were retained as printed. Where a relative size as indicated for illustrations (i.e., × 3), they may not be correct for the displayed images as resolution of monitors vary. Each set of footnotes were placed at the end of each species account. The list of KU Publications were compiled after the article's text.Typographical CorrectionsPageCorrection591proödent ⇒ proödont694hesperomyines ⇒ hesperomines
Transcriber's Notes
The text presented is that of the original printed version except for the revisions below and a few assumed typesetting errors. The subsection headers under "VARIATION WITH AGE" were converted to italic only to match the rest. All other section title formatting retained as printed. The words Miscellaneous and Monograph were abbreviated as Miscl. and Mongr. respectively. Except for the two variant spellings of one word (Mexico/México) which were retained, the most prevalent form of accented words was used.
Both decimal and whole and fractional part of numbers (i.e., 91/2) were retained as printed. Where a relative size as indicated for illustrations (i.e., × 3), they may not be correct for the displayed images as resolution of monitors vary. Each set of footnotes were placed at the end of each species account. The list of KU Publications were compiled after the article's text.
Typographical Corrections