Vol. XI] VAN DENBURGH-SLEVIN— AMPHIBIANS AND REPTILBS 29 



*37. Thamnophis sirtalis infernalis 



38. Thamnophis ordinoides elegans 



39. Thamnophis ordinoides vagrans 



40. Thamnophis ordinoides couchii 



41. Sonora semiannnlata 



42. Crotalus oreganus 

 *43. Crotalus tigris 

 *44. Crotalus cerastes 

 *45. Gopherus agassizii 



1. Scaphiopus hammondii Baird 



Nos. 4091 1 to 40924 are fourteen specimens of this spadefoot 

 toad taken at dusk in pools of water in the beach of Pyramid 

 Lake, July 3 to 9, 1916. None was seen after these dates. 



2. Bufo compactilis Wiegmann 



Although this toad has been found in Arizona and Utah, we 

 believe its presence in Nevada has not been recorded. Speci- 

 mens (Nos. 36959, 36960, 36968) are at hand from Las 

 Vegas, Clark County, and (Nos. 37330-37507), from Caliente, 

 Lincoln County. 



3. Bufo boreas boreas (Baird & Girard) 



We refer to this subspecies two specimens (Nos. 40946, 

 40947) from Elko, Elko County, and a fairly large series 

 (Nos. 40878 to 40910) from Pyramid Lake, Washoe County. 

 The toads from Pyramid Lake were found at Sutcliffe, at the 

 Pyramids, and on Anaho Island. 



4. Bufo boreas halophilus (Baird & Girard) 



Three toads (Nos. 38013 to 38015) collected near Glen- 

 brook, Douglas County, on the shore of Lake Tahoe, seem to 

 represent this southern subspecies. 



*Species which the Academy has not yet received from Nevada. 



