220 



CALIFORNIA ACADEMY OF SCIENCES 



[Proc. 4th Ser. 



Pituophis vertebralis (Blainville) 



We now have at hand no specimens of this gopher-snake. 

 Its range seems to be restricted to the Cape Region of Lower 

 California. It agrees with Pituophis catenifer annectens in 

 the number of its gastrosteges. The large amount of red in 

 its coloration enables one to distinguish it readily from both 

 subspecies of Pituophis catenifer. That it also seems to have 

 a larger number of scale-rows is shown by the counts re- 

 printed below. 



Scale counts in Pituophis vertebralis 



BIBLIOGRAPHY 



Baird, S. F., and Girard, Charles. 



1852. Stansbury's Expl. Great Salt Lake, Appendix C. — Reptiles, 

 p. 350. 



1853. Catalogue of North American Reptiles in the Museum of the 

 Smithsonian Institution. Part I. Serpents, p. 69. 



Blainville, H. D. de. 



1835. Description de quelque especes de Reptiles de la Californie. 

 Nouv. Ann. du Mus. Paris, IV, 1835, pp. 1-64, pis. 24-27. 

 Cope, E. D. 



1860. Proceedings Philadelphia Academy of Natural Sciences, 1860, 



p. 342. 

 1875. Bulletin of the United States National Museum, No. 1, 1875, 

 pp. 39, 92. 

 Daudin, F. 



1803. Histoire Naturelle des Reptiles, 1803, Vol. 6, p. 409. 

 Dumeril, A., et Bibron, G, 



1854. Erpetology Generale, Vol. 7, p. 238. 

 Hallowell, E. 



1853. Proceedings Philadelphia Academy of Natural Sciences, Vol. 

 6, p. 236. 

 Holbrook, J. E. 



1842. North American Herpetology, Second Edition, Vol. 4, p. 7. 

 Stejneger, L. 



1893. North American Fauna, No. 7, p. 206. 



