CHECKLIST OF THE AMPHIBIA OF MEXICO 19 



7. Body elongated; 13 or more costal folds; skull well ossified... Oedipina (p. 21) 

 Body normal, less than 13 costal folds 8 



8. Digits free beyond metatarsals and metacarpals (or only slightly webbed 



beyond) (cephalica group); skull well developed; vertebrae not com- 

 pletely opisthocoelous; larger Pseudoeurycea (p. 25) 



Digits webbed to end of proximal phalanx; the hand and foot widespread 

 with well-developed terminal pads; vertebrae opisthocoelous but with- 

 out a rounded articular condyle; smaller Chiropterotriton (p. 30) 



Genus ENSATINA Gray 



Ensatina Gray, Catalogue of the Batrachia Gradientia of the British Museum, 

 1850, p. 48. 



Genotype. — Ensatina eschscholtzii Gray. 



Range. — Pacific North America from British Columbia to north- 

 western Baja CaHfornia. 



Species. — Four, two of which are races of E. eschscholtzii; one 

 occurs in Mexico. 



ENSATINA CROCEATER (Cope) 



Plethodon croceater Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 19, 1867, p. 210. 



Ensatina croceater Stejneger and Barbour, A checklist of North American 

 amphibians and reptiles, ed. 2, 1923, p. 12. — Bishop, Handbook of sala- 

 manders, 1943, pp. 295-297, fig. 83, map 36. 



Type.— U.S.N. M. No. 4701 (now lost). 



Type locality.— "Fori Tejon," Calif. 



Range. — Southern California and northern Baja California, above 

 elevations of about 4,000 feet. Recorded from Cape San Lucas 

 (doubtful occurrence), "75 mi. southeast San Diego, California," and 

 San Pedro Mdrtir Mountains. 



Genus BATRACHOSEPS Bonaparte 



Batrachoseps Bonaparte, Iconografia della fauna Italica, vol. 2, fasc. 26, 1839, 

 fol, 131, not paged. 



Genotype. — Salamandrina attenuata Eschscholtz. 



Range. — Pacific North America from southern Alaska to northern 

 Baja California; possibly Colima. 



Species. — Six forms are described, all but one of which are sub- 

 species of B. aftenuatus; one occurs in Mexico. 



batrachoseps ATTENUATUS LEUCOPUS Dunn 



Batrachoseps leucopus Dunn, Copeia, No. 109, 1922, pp. 61-62. 



Batrachoseps attenuatus leucopus Dunn, The salamanders of the family Pletho- 



dontidae, 1926, pp. 241-243.— Bishop, Handbook of salamanders, 1943, pp. 



317-320, fig. 91, map 38. 



