SUMMARYThe genusConophisPeters, 1860, contains four species. Three are monotypic and the fourth has three subspecies, making a total of six taxa.The genus is characterized by maxillary teeth of equal size followed by a diastema and two enlarged grooved fangs. The scales are smooth, in 19 rows at mid-body, and 17 nearer the tail. The anal is divided, apical pits are lacking, the head shields are normal for a colubrid, and the hemipenis is bilobed having many large basal spines.The six taxa are separated primarily on the basis of color pattern, but characters of scutellation, including numbers of dorsals, ventrals,caudals, and places of reduction of the number of dorsal scale-rows, were analyzed.Snakes of this genus are distributed throughout semi-arid environments from southern México southward into Costa Rica. They feed upon lizards, primarily of the genusCnemidophorus; in addition they are known to eat small rodents and other snakes.Conophisis a member of the subfamily Xenodontinae and, as presently understood, has no known living close relatives. A single specimen ofDryinoidesfrom the Miocene of Montana has been compared with this genus. The genusConophisis thought to have evolved in Middle America. The present distribution and differentiation probably are primarily the result of climatic fluctuations in Middle America, which produced the areas of subhumid environment whereConophispresently lives.LITERATURE CITEDAuffenberg, W.1958. A new genus of colubrid snake from the Upper Miocene of North America. Amer. Mus. Novitates, 1874:1-16. February 27.Cope, E. D.1861. Contributions to the ophiology of Lower California, México and Central America. Proc. Acad. Nat. Sci. Philadelphia, 13:292-306. December 28.1867. Fifth contribution to the herpetology of tropical America. Proc. Acad. Nat. Sci. Philadelphia, 18:317-323. February 20.1871. Ninth contribution to the herpetology of tropical America. Proc. Acad. Nat. Sci. Philadelphia, 23(2):200-224. October 24.1876. On the batrachia and reptilia of Costa Rica. Journ. Acad. Nat. Sci. Philadelphia, series 2, 8(4):93-154, 6 pls.1895. The classification of the ophidia. Trans. Amer. Philos. Soc., 18:186-219, 33 pls. April 15.1900. The crocodilians, lizards, and snakes of North America. Ann. Rept. U. S. Natl. Mus. for 1898, pp. 153-1270, 36 pls.Ditmars, R. L.1931. Snakes of the World. New York, The MacMillan Company, 1931. xi + 207 pp., 84 pls.Dowling, H. G.1951. A proposed standard system of counting ventrals in snakes. British Journ. Herpetology, 1(5):97-99, fig. 1.Duellman, W. E.1958. A preliminary analysis of the herpetofauna of Colima, Mexico. Occas. Papers Mus. Zool. Univ. Michigan, 589:1-22, March 21.Duméril, A. M. C., Bibron, G., and Duméril, A. H. A.1854. Érpétologie genérale, ou histoire naturelle des reptiles. Paris, 7(pt. 2):xii + 785. February 25. Atlas, 24 pp., 108 pls.Duméril, A. H. A., Bocourt, M., and Mocquard, F.1870-1909. Mission Scientifique au Mexique et dans l'Amerique Centrale … Etudes sur les Reptiles. Paris, vol. 2:xiv + 1012 pp., 77 pls.Garman, S.1884a. The North American reptiles and batrachians. Bull. Essex Inst., 16:1-46. January 9.1884b. The reptiles and batrachians of North America. Mem. Mus. Comp. Zool., 8(3):xxxi + 185 pp., 9 pls. July.Günther, A. C. L. G.1858. Catalogue of colubrine snakes in the collection of the British Museum. London. xiv + 281 pp.Huxley, J.1942. Evolution. The Modern Synthesis. London. 645 pp.Jan, G. and Sordelli, F.1866. Iconographie Generale des Ophidiens. Milano. livr. 19, pls. 1-6. December.1881. Iconographie Generale des Ophidiens. Milano. livr. 50, pls. 1-7. November.Mayr, E.1942. Systematics and the Origin of Species. New York, x + 334 pp., 29 figs.Mayr, E., Linsley, E. G., and Usinger, R. L.1953. Methods and Principles of Systematic Zoology. New York. ix + 328 pp., 45 figs.Mertens, R.1952a. Neues uber die Reptilienfauna von El Salvador. Zool. Anz., 148:87-93. February.1952b. Die Amphibien und Reptilien von El Salvador auf grund der reisen von R. Mertens und A. Zilch. Abhand. Senken. Naturw. Gesell., 487:83, 1 Kart., 16 taf. December 1.Mittleman, M. B.1944. Feeding habits of a Central American opisthoglyph snake. Copeia, no. 2:122. June 30.Neill, W. T. and Allen, R.1961. Further studies on the herpetology of British Honduras. Herpetologica, 17(1):37-52. April 15.Parker, W. K.1878. On the structure and development of the skull in the common snake (Tropidonotus natrix). Phil. Trans. Roy. Soc. London, pt. 2:385-417, pp., pls. 27-33.Peters, W.1860. Drei neue amerikanisches Schlangen. Monatsb. Akad. Wiss. Berlin, 1860:517-521, pl., fig. 3. October.Radovanovic, M.1937. Osteologie des Schlangenkopfs. Jenaische Zeitschr. Naturw., 71(2):179-312.Savage, J. M.1949. Notes on the Central American snake,Conophis lineatus dunniSmith, with a record from Honduras. Trans. Kansas Acad. Sci., 50:483-486. December 31.Schmidt, K. P.1928. Reptiles collected in Salvador for the California Institute of Technology. Zool. Ser. Field Mus. Nat. Hist., 12(16):193-201. November 21.Schmidt, K. P. and Inger, R. F.1957. Living Reptiles of the World. Garden City, New York, Hanover House. 287 pp.Smith, H. M.1941. Notes on snakes of the genusConophis. Journ. Washington Acad. Sci., 31(3):117-124. March 15.Smith, H. M. and Taylor, E. H.1950. Type localities of Méxican reptiles and amphibians. Univ. Kansas Sci. Bull., 33:313-380. March 20.Stuart, L. C.1948. The amphibians and reptiles of Alta Verapaz, Guatemala. Misc. Publ. Mus. Zool. Univ. Michigan, 69:1-109. June 12.1954a. A description of a subhumid corridor across northern Central America, with comments on itsherpetofaunalindicators. Contr. Lab. Vert. Biol. Univ. Michigan, 65:1-26 pp., 6 pls. March.1954b. Herpetofauna of the southeast highlands of Guatemala. Contr. Lab. Vert. Biol. Univ. Michigan, 68:1-65 pp., 3 pls. November.Szunyoghy, J.1932. Beitrage zur vergleichenden Formenlehre des Colubridenschadels, nebst einer Kraniologischen Synopsis der fossilen Schlangen Ungarns. Acta Zool., 13:1-56.Taylor, E. H.1955. Additions to the known herpetological fauna of Costa Rica with comments on other species. No. II. Univ. Kansas Sci. Bull., 37:299-575. October 15.Taylor, E. H. and Smith, H. M.1939. Miscellaneous notes on Mexican snakes. Univ. Kansas Sci. Bull., 25:239-258. July 10.Wettstein, O.1934. Ergibnisse der osterreichischen biologischen Costa Rica—Expedition 1930. Die Amphibia und Reptilien. Stiz. Akad. Wiss. Wien, mathem-naturw. kl., Abt. 1, bd. 143:1-39.Transmitted November 30, 1962.29-5936UNIVERSITY 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, 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.Nos. 1-15 and index. Pp. 1-651, 1952-1955.Vol. 8.Nos. 1-10 and index. Pp. 1-675, 1954-1956.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 extension 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 Coahulia, 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 Coahulia. 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. 363-384, 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 Sydney Anderson. 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 Baimoys. By Robert L. Packard. Pp. 579-670, 4 plates, 12 figures in text. June 16, 1960.Index. Pp. 671-690Vol. 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. maritima. 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, plates 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 Gerhard A. Schad. 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. 599-610. 1 plate, 1 figure in text. May 2, 1960.Index. Pp. 611-626.Vol. 11.Nos. 1-10 and index. Pp. 1-703, 1958-1960.Vol. 12.1.Functional morphology of three bats: Sumops, 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 in text. May 2, 1960.5.Natural history of the bell vireo. By Jon C. Barlow. Pp. 241-296, 6 figures in text. March 7, 1962.6.Two new pelycosaurs from the lower Permian of Oklahoma. By Richard C. Fox. Pp. 297-307, 6 figures in text. May 21, 1962.7.Vertebrates from the barrier island of Tamaulipas, México. By Robert K. Selander, Richard F. Johnston, B. J. Wilks, and Gerald G. Raun. Pp. 309-345, pls. 5-8. June 18, 1962.8.Teeth of Edestid sharks. By Theodore H. Eaton, Jr. Pp. 347-362, 10 figures in text. October 1, 1962.More numbers will appear in volume 12.Vol. 13.1.Five natural hybrid combinations in minnows (Cyprinidae). By Frank B. Cross and W. L. Minckley. Pp. 1-18. June 1, 1960.2.A distributional study of the amphibians of the Isthmus of Tehuantepec, México. By William E. Duellman. Pp. 19-72, pls. 1-8, 3 figures in text. August 16, 1960.3.A new subspecies of the slider turtle (Pseudemys scripta) from Coahulia, México. By John M. Legler. Pp. 73-84, pls. 9-12, 3 figures in text. August 16, 1960.4.Autecology of the copperhead. By Henry S. Fitch. Pp. 85-288, pls. 13-20, 26 figures in text. November 30, 1960.5.Occurrence of the garter snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains. By Henry S. Fitch and T. Paul Maslin. Pp. 289-308, 4 figures in text. February 10, 1961.6.Fishes of the Wakarusa river in Kansas. By James E. Deacon and Artie L. Metcalf. Pp. 309-322, 1 figure in text. February 10, 1961.7.Geographic variation in the North American cyprinid fish, Hybopsis gracilis. By Leonard J. Olund and Frank B. Cross. Pp. 323-348, pls. 21-24, 2 figures in text. February 10, 1961.8.Descriptionsof two species of frogs, genus Ptychohyla; studies of American hylid frogs, V. By William E. Duellman. Pp. 349-357, pl. 25, 2 figures in text. April 27, 1961.9.Fish populations, following a drought, in the Neosho and Marais des Cygnes rivers of Kansas. By James Everett Deacon. Pp. 359-427, pls. 26-30, 3 figs. August 11, 1961.10.Recent soft-shelled turtles of North America (family Trionychidae). By Robert G. Webb. Pp. 429-611, pls. 31-54, 24 figures in text. February 16, 1962.Index. Pp. 613-624.Vol. 14.1.Neotropical bats from western México. By Sydney Anderson. Pp. 1-8. October 24, 1960.2.Geographic variation in the harvest mouse. Reithrodontomys megalotis, on the central Great Plains and in adjacent regions. By J. Knox Jones, Jr., and B. Mursaloglu. Pp. 9-27, 1 figure in text. July 24, 1961.3.Mammals of Mesa Verde National Park, Colorado. By Sydney Anderson. Pp. 29-67, pls. 1 and 2, 3 figures in text. July 24, 1961.4.A new subspecies of the black myotis (bat) from eastern Mexico. By E. Raymond HallandTicul Alvarez. Pp. 69-72, 1 figure in text. December 29, 1961.5.North American yellow bats, "Dasypterus," and a list of the named kinds of the genus Lasiurus Gray. By E. Raymond Hall and J. Knox Jones, Jr. Pp. 73-98, 4 figures in text. December 29, 1961.6.Natural history of the brush mouse (Peromyscus boylii) in Kansas with description of a new subspecies. By Charles A. Long. Pp. 99-111, 1 figure in text. December 29, 1961.7.Taxonomic status of some mice of the Peromyscus boylii group in eastern Mexico, with description of a new subspecies. By Ticul Alvarez. Pp. 113-120, 1 figure in text. December 29, 1961.8.A new subspecies of ground squirrel (Spermophilus spilosoma) from Tamaulipas, Mexico. By Ticul Alvarez. Pp. 121-124. March 7, 1962.9.Taxonomic status of the free-tailed bat, Tadarida yucatanica Miller. By J. Knox Jones, Jr., and Ticul Alvarez. Pp. 125-133, 1 figure in text. March 7, 1962.10.A new doglike carnivore, genus Cynaretus, from the Clarendonian Pliocene, of Texas. By E. Raymond Hall and Walter W. Dalquest. Pp. 135-138, 2 figures in text. April 30, 1962.11.A new subspecies of wood rat (Neotoma) from northeastern Mexico. By Ticul Alvarez. Pp. 139-143. April 30, 1962.12.Noteworthy mammals from Sinaloa, Mexico. By J. Knox Jones, Jr., Ticul Alvarez, and M. Raymond Lee. Pp. 145-159, 1 figure in text. May 18, 1962.13.A new bat (Myotis) from Mexico. By E. Raymond Hall. Pp. 161-164, 1 figure in text. May 21, 1962.14.The mammals of Veracruz. By E. Raymond HallandWalter W. Dalquest. Pp. 165-362, 2 figures. May 20, 1963.15.The recent mammals of Tamaulipas, México. By Ticul Alvarez. Pp. 363-473, 5 figures in text. May 20, 1963.More numbers will appear in volume 14.Vol. 15.1.The amphibians and reptiles of Michoacán, México. By William E. Duellman. Pp. 1-148, pls. 1-6, 11 figures in text. December 20, 1961.2.Some reptiles and amphibians from Korea. By Robert G. Webb, J. Knox Jones, Jr., and George W. Byers. Pp. 149-173. January 31, 1962.3.A new species of frog (Genus Tomodactylus) from western México. By Robert G. Webb. Pp. 175-181, 1 figure in text. March 7, 1962.4.Type specimens of amphibians and reptiles in the Museum of Natural History, the University of Kansas. By William E. Duellman and Barbara Berg. Pp. 183-204. October 26, 1962.5.Amphibians and Reptiles of the Rainforests of Southern El Petén, Guatemala. By William E. Duellman. Pp. 205-249, pls. 7-10, 6 figures in text. October 4, 1963.6.A revision of snakes of the genus Conophis (Family Colubridae, from Middle America). By John Wellman. Pp. 251-295, 9 figures in text. October 4, 1963.More numbers will appear in volume 15.Transcriber's NotesFor consistancy, a number of word which had alternate spellings were altered to match the most prevalent version used. For example, where the word Mexico was used in the body of the article, the more frequent spelling (México) was substituted. However, in the reference sections, the spelling was not altered as that may have been the spelling used by the article's author. All occurrances of Érpétologie Genérale were correcteded to Erpétologie Générale (Pp.255,262,267,277, and278).On page 279 underVariationthere appears to be a miscalculation:668 mm. + 182 mm. = 850 mm.not840 as in original text.Typographical CorrectionsPageCorrection264immaculaate ⇒ immaculate264chacteristic ⇒ characteristic266elevatons ⇒ elevations267Dumeril ⇒ Duméril277Duméil ⇒ Duméril279Tehauntepec ⇒ Tehuantepec280Deleted repeated "Oaxaca,"292primarly ⇒ primarily295hertetofaunal ⇒ herpetofaunaliV. 9 No. 12 - Pp. 363-387 ⇒ Pp. 363-384iiiV. 13 No. 8 - Decriptions ⇒ DescriptionsiiiV. 14 No. 8 - anad ⇒ andiiiV. 14 No. 14 - anad ⇒ and
SUMMARY
The genusConophisPeters, 1860, contains four species. Three are monotypic and the fourth has three subspecies, making a total of six taxa.
The genus is characterized by maxillary teeth of equal size followed by a diastema and two enlarged grooved fangs. The scales are smooth, in 19 rows at mid-body, and 17 nearer the tail. The anal is divided, apical pits are lacking, the head shields are normal for a colubrid, and the hemipenis is bilobed having many large basal spines.
The six taxa are separated primarily on the basis of color pattern, but characters of scutellation, including numbers of dorsals, ventrals,caudals, and places of reduction of the number of dorsal scale-rows, were analyzed.
Snakes of this genus are distributed throughout semi-arid environments from southern México southward into Costa Rica. They feed upon lizards, primarily of the genusCnemidophorus; in addition they are known to eat small rodents and other snakes.
Conophisis a member of the subfamily Xenodontinae and, as presently understood, has no known living close relatives. A single specimen ofDryinoidesfrom the Miocene of Montana has been compared with this genus. The genusConophisis thought to have evolved in Middle America. The present distribution and differentiation probably are primarily the result of climatic fluctuations in Middle America, which produced the areas of subhumid environment whereConophispresently lives.
LITERATURE CITED
Auffenberg, W.
1958. A new genus of colubrid snake from the Upper Miocene of North America. Amer. Mus. Novitates, 1874:1-16. February 27.
Cope, E. D.
1861. Contributions to the ophiology of Lower California, México and Central America. Proc. Acad. Nat. Sci. Philadelphia, 13:292-306. December 28.
1867. Fifth contribution to the herpetology of tropical America. Proc. Acad. Nat. Sci. Philadelphia, 18:317-323. February 20.
1871. Ninth contribution to the herpetology of tropical America. Proc. Acad. Nat. Sci. Philadelphia, 23(2):200-224. October 24.
1876. On the batrachia and reptilia of Costa Rica. Journ. Acad. Nat. Sci. Philadelphia, series 2, 8(4):93-154, 6 pls.
1895. The classification of the ophidia. Trans. Amer. Philos. Soc., 18:186-219, 33 pls. April 15.
1900. The crocodilians, lizards, and snakes of North America. Ann. Rept. U. S. Natl. Mus. for 1898, pp. 153-1270, 36 pls.
Ditmars, R. L.
1931. Snakes of the World. New York, The MacMillan Company, 1931. xi + 207 pp., 84 pls.
Dowling, H. G.
1951. A proposed standard system of counting ventrals in snakes. British Journ. Herpetology, 1(5):97-99, fig. 1.
Duellman, W. E.
1958. A preliminary analysis of the herpetofauna of Colima, Mexico. Occas. Papers Mus. Zool. Univ. Michigan, 589:1-22, March 21.
Duméril, A. M. C., Bibron, G., and Duméril, A. H. A.
1854. Érpétologie genérale, ou histoire naturelle des reptiles. Paris, 7(pt. 2):xii + 785. February 25. Atlas, 24 pp., 108 pls.
Duméril, A. H. A., Bocourt, M., and Mocquard, F.
1870-1909. Mission Scientifique au Mexique et dans l'Amerique Centrale … Etudes sur les Reptiles. Paris, vol. 2:xiv + 1012 pp., 77 pls.
Garman, S.
1884a. The North American reptiles and batrachians. Bull. Essex Inst., 16:1-46. January 9.
1884b. The reptiles and batrachians of North America. Mem. Mus. Comp. Zool., 8(3):xxxi + 185 pp., 9 pls. July.
Günther, A. C. L. G.
1858. Catalogue of colubrine snakes in the collection of the British Museum. London. xiv + 281 pp.
Huxley, J.
1942. Evolution. The Modern Synthesis. London. 645 pp.
Jan, G. and Sordelli, F.
1866. Iconographie Generale des Ophidiens. Milano. livr. 19, pls. 1-6. December.
1881. Iconographie Generale des Ophidiens. Milano. livr. 50, pls. 1-7. November.
Mayr, E.
1942. Systematics and the Origin of Species. New York, x + 334 pp., 29 figs.
Mayr, E., Linsley, E. G., and Usinger, R. L.
1953. Methods and Principles of Systematic Zoology. New York. ix + 328 pp., 45 figs.
Mertens, R.
1952a. Neues uber die Reptilienfauna von El Salvador. Zool. Anz., 148:87-93. February.
1952b. Die Amphibien und Reptilien von El Salvador auf grund der reisen von R. Mertens und A. Zilch. Abhand. Senken. Naturw. Gesell., 487:83, 1 Kart., 16 taf. December 1.
Mittleman, M. B.
1944. Feeding habits of a Central American opisthoglyph snake. Copeia, no. 2:122. June 30.
Neill, W. T. and Allen, R.
1961. Further studies on the herpetology of British Honduras. Herpetologica, 17(1):37-52. April 15.
Parker, W. K.
1878. On the structure and development of the skull in the common snake (Tropidonotus natrix). Phil. Trans. Roy. Soc. London, pt. 2:385-417, pp., pls. 27-33.
Peters, W.
1860. Drei neue amerikanisches Schlangen. Monatsb. Akad. Wiss. Berlin, 1860:517-521, pl., fig. 3. October.
Radovanovic, M.
1937. Osteologie des Schlangenkopfs. Jenaische Zeitschr. Naturw., 71(2):179-312.
Savage, J. M.
1949. Notes on the Central American snake,Conophis lineatus dunniSmith, with a record from Honduras. Trans. Kansas Acad. Sci., 50:483-486. December 31.
Schmidt, K. P.
1928. Reptiles collected in Salvador for the California Institute of Technology. Zool. Ser. Field Mus. Nat. Hist., 12(16):193-201. November 21.
Schmidt, K. P. and Inger, R. F.
1957. Living Reptiles of the World. Garden City, New York, Hanover House. 287 pp.
Smith, H. M.
1941. Notes on snakes of the genusConophis. Journ. Washington Acad. Sci., 31(3):117-124. March 15.
Smith, H. M. and Taylor, E. H.
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Transmitted November 30, 1962.
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Transcriber's NotesFor consistancy, a number of word which had alternate spellings were altered to match the most prevalent version used. For example, where the word Mexico was used in the body of the article, the more frequent spelling (México) was substituted. However, in the reference sections, the spelling was not altered as that may have been the spelling used by the article's author. All occurrances of Érpétologie Genérale were correcteded to Erpétologie Générale (Pp.255,262,267,277, and278).On page 279 underVariationthere appears to be a miscalculation:668 mm. + 182 mm. = 850 mm.not840 as in original text.Typographical CorrectionsPageCorrection264immaculaate ⇒ immaculate264chacteristic ⇒ characteristic266elevatons ⇒ elevations267Dumeril ⇒ Duméril277Duméil ⇒ Duméril279Tehauntepec ⇒ Tehuantepec280Deleted repeated "Oaxaca,"292primarly ⇒ primarily295hertetofaunal ⇒ herpetofaunaliV. 9 No. 12 - Pp. 363-387 ⇒ Pp. 363-384iiiV. 13 No. 8 - Decriptions ⇒ DescriptionsiiiV. 14 No. 8 - anad ⇒ andiiiV. 14 No. 14 - anad ⇒ and
Transcriber's Notes
For consistancy, a number of word which had alternate spellings were altered to match the most prevalent version used. For example, where the word Mexico was used in the body of the article, the more frequent spelling (México) was substituted. However, in the reference sections, the spelling was not altered as that may have been the spelling used by the article's author. All occurrances of Érpétologie Genérale were correcteded to Erpétologie Générale (Pp.255,262,267,277, and278).
On page 279 underVariationthere appears to be a miscalculation:
668 mm. + 182 mm. = 850 mm.not840 as in original text.
Typographical Corrections