18 PROCEEDINGS OF THE ACADEMY OP [1883. 



different from those of Atlanta, and are those of the great basin 



of Utah, I am indebted to Mr. J. L.Wortman for these specimens. 



Fhrynosoma platyrhinum Gird. 



Crotaphytus collaris Say. 



Crotaphytus wislizeni B. and 6. 



Uta stansburiana B. and G. 



Sceloporus smaragdinus Cope. 



Pityophis catenifer Blainv. 



Bascanium vetustain B. and G. 



The head is a little longer than in a specimen from central 

 Oregon, and the muzzle is less, conical. The fifth superior labial 

 just reaches the inferior postorbital. 



9. From Reno to Pyramid Lake, Nevada. 



The road from Reno to the southern extremity of Surprise 

 Valley, California, passes through an arid and forbidding country. 

 The rocks are entirely basaltic, and frequently present a rugged 

 foundation for the road. The vegetation consists of Artemisia, 

 and where alkali abounds, of Sarcobatus. North of Pyramid 

 Lake, the dry alkaline flats once covered by the Alkali Lake, have 

 a wide extent. During the hot weather of July, 1882, the region 

 swarmed with lizards, and rattlesnakes were numerous. The 

 greatest number of both was met with from Pyramid Lake north- 

 wards for twenty miles. 



Bafo columbiensis Bd. and Gird. Pyramid Lake. 

 Scaphiopus intermoutanus Cope. 



With the preceding species in a pond near the shore of Pyramid 

 Lake. Like other allied species, it was very noisy, almost obscu- 

 ring the voice of the less vociferous Bufo. 

 Fhrynosoma platyrhinum Gird. 



Very abundant. 

 Crotaphytus collaris Say. 

 Crotaphytus wislizeni B. and G. ^ 



More abundant than the G. collaris. 

 Holbrookia sp. 



A fine species was seen north of Pyramid Lake, but it was so 

 swift that I did not succeed in catching a specimen. It resembles 

 the H. texana, and may be an undescribed species. 

 Sceloporus smaragdinus Cope. 



A variety with one additional row of small supraorbital scales, 

 makino; six rows in all. 



