156 CALIFORNIA ACADEMY OF SCIENCES. 



List of specimens of Trimorphodon lyrophanes. 



Cal. Acad. 

 Sci. No. 



Locality. 



Date. 



Collector. 



482 



San Jose del Cabo, L.C. 



Mar. 16, 1892 



W.E.Bryant. 



810 





Sept., 1893 



Gustav Eisen. 



878 



" 



May, 1893 



" 



1405 



Sierra San Lazaro, L. C. 



Sept., 1894 



Eisen and Vaslit. 



1549 



San Jose del Cabo, L. C. 



" 



" 



2209 



Lower California. 







2210 



" 







Crotalis atrox B. and G. 



Crotalus atrox. 



(1853, Baird and Girard, Cat. N. A. Keptiles, i, Serpents, p. 5.) 

 Gaudisona atrox sonoraensis. 



1861, Cope, Proc. Ac. Nat. Sci. Phila., p. 292. 

 Crotalus adamanteus atrox. 



(1875, Cope, BwW. U. S. Nat. Mus., No. 1, p. 33.) 



1877, Streets, Bull. U. S. Nat. Mus., No. 7, p. 40. 



1883, Yarrow, Bull. U. S. Nat. Mus., p. No. 24, p. 75. 



(1889, Cope, Proc. U. S. Nat. Mus., p. 147.) 



(1891, Cope, Proc. U. S. Nat. Mus., p. 690.) 



Without specimens from other localities for comparison, 

 nothing can be said about the status of Lower Californian 

 snakes of the Crotahis adamanteus group. Prof. Cope is 

 followed, therefore, in the use of the name atrox, although 

 it seems scarcely probable that Lower Californian and 

 Texan specimens are identical. 



In the collection of 1894 ^^^ seven specimens about 

 170 mm. long. These, Dr. Eisen informs me, were taken 

 from a large female caught at San Jose del Cabo. 



This rattlesnake has been reported from Cape San 

 Lucas, La Paz, and Los Coronados Islands, in Lower 

 California. 



