14 PROCEEDINGS OF THE ACADEMY OF [1888. 



Total length, m. '555 ; to constriction of neck, '02*7 ; length of 

 tail, -074 ; do. without rattle, -026. 



This is one of the smallest species of Crotalus, a,nd is one of the 

 most handsomely colored. Its coloration is entirely unique in the 

 genus. The scutellation of the muzzle places it between the two 

 sections of the genus, typified respectively by C. horridus and 

 G. durissus. 



The specimen was captured on the summit of the Magdalena 

 Mountains, which are northwest from Socorro twenty miles. 



3. St. Thomas, Nevada. 



This locality is on the Virgen River, in southeastern Nevada, 

 nearly in the latitude of the southern boundary of Utah. The 

 collection now referred to was made by Dr. Edward Palmer and 

 sent by him to the Smithsonian Institution. Through Professor 

 Baird, the distinguished Secretary, it was referred to me for 

 identification. 



Bafo lentiginosus frontosus Cope. 



This is the toad of the Great Basin, representing the B. colum- 

 biensis of more northern regions. 

 Crotaphytus wislizeni B. and G. 

 Cnemidophorus tessellatus Say. 

 Ophibolus getulus boyli B. and G. 



The most northern locality for this species in the Great Basin. 

 It has been previously obtained by Palmer and Coues, near 

 Prescott, Arizona. 



Phimothyra grahamiae B. and G. 



A variety with the dorsal bands nearly obsolete, and separated 

 by three rows of dorsal scales on all parts of the body. Two 

 preoculars on one side and three en the other. The most northern 

 locality for this species. 



4. Santa Fe, New Mexico. 



Amblystoma mavortium Baird. 

 Not uncommon. 



Spea hammondii Baird. 



Abundant in July and August, when it deposits its eggs in the 

 pools of rain-water. It is very nois}' at such times, and the open 

 lots in the city of Santa F^ resound with its cries. They are much 

 like those of the Scaphiopus holbrookii. 



