LITERATURE CITED 



Allen, Mokbow J. 



1933. Report on a collection of amphibians and i-eptiles from Sonora, Mexico, 



with the description of a new lizard. Occ. Pap. Mus. Zool. Univ. 



Michigan, No. 259, 15 pp. 

 Am aral, Afranto no. 



1927a. Studies of Nearctic Ophidia, II: Crotalus pricei Van Denhurgh, 1896, 



a synonym of G. Iris, flatus (Wagler, 1830). Bull. Antiv. Inst. 



Amer., vol. 1, No. 2. pp. 48-54, 2 figs. 

 1927b. Studies of Neotropic Ophidia, IX: Anomalepis Jan, 1861. Bull. 



Antiv. Inst. Amer., vol. 1, No. 3, pp. 88-89. 

 1929a. Studies of Nearctic Ophidia, V: Crotalus confluentus Say, 1823, 



and its allied forms. Bull Antiv. Inst. Amer., vol. 2, No. 4, pp. 



86-97. 

 1929b. Studies of Neotropical Ophidia, XII: On the Bothrops lanspergi 



group. Bull. Antiv. Inst. Amer., vol. 3, No. 1, pp. 19-27. 

 1929c. Estudos sobre ophidios neotropicos, XX: Revisao do genero 



Phrynonax Cope, 1862. Mem. Inst. Butantan, vol. 4, pp. 301-320, 



5 pis. 

 Andrews, E. Wtllys. 



1937. Notes on the snakes from the Yucatan Peninsula. Publ. Field Mus. 



Nat. Hist., zool. ser., vol. 20, No. 25, pp. 355-359. 

 Bailet, Joseph R. 



1939. A systematic revision of the snakes of the genus Coniophanes. Pap. 



Michigan Acad. Sci., Arts, Lett., vol. 24, pt. 2, 48 pp., 5 figs., 3 pis. 



1940. The Mexican snakes of the genus RJiadinaea, Occ. Pap. Mus. Zool. 



Univ. Michigan, No. 412, 19 pp., 2 pis. 

 Batbd, Spencer Fullerton. 



1859. Reptiles of the boundary. United States-Mexican Boundary Survey, 

 vol. 2, pp. 1-35, 41 pis. 

 Baird, Spencer Fullerton, and Girard, Charles. 



1852. Reptiles. In Stansbury's "Exploration and Survey of the Valley of 



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1853. Catalogue of North American reptiles in the museum of the Smith- 



sonian Institution, pt. 1 : Serpents, xvi-j-172 pp. 

 Blanchard, Frank Nelson. 



1920. Three new snakes of the genus Lampropeltis. Occ. Pap. Mus. Zool. 



Univ. Michigan, No. 81, 10 pp. 



1921. A revision of the king snakes: Genus Lampropeltis. U. S. Nat. 



Mus. Bull. 114, 260 pp., 78 figs. 

 1924. A new snake of the genus Arizona. Occ. Pap. Mus. Zool. Univ. 

 Michigan, No. 150, 5 pp. 

 Bocourt, Fikmin. 



1882. Mission scientifique au Mexique et dans l'Aniexique centrale. . . . 

 Etudes sur les reptiles, livr. 8, pp. 489-528, 4 pis. 

 Boulenger, George Albert. 



1893. Catalogue of the snakes in the British Museum (Natural History), 



vol. 1, xiv+448 pp., 28 pis. 



1894. Catalogue of the snakes in the British Museum (Natural History), 



vol. 2, xii-f 382 pp., 20 pis. 



499 



