220 



NORTH AMERICAN FAUNA. 



I No. 7. 



Bufo halophilus 15. & (i. (Plate in, ligs. 3 <t-b). 



Of rather general distribution, as specimens were eollected by the 

 expedition inside tbe great interior valley of California, on the Tactic 

 coast near Monterey, and in various localities in Owens Valley, east 

 of the Sierra Nevada. Its vertical range is hardly less extended, hav- 

 ing been found from the level of the sea to more than 10,000 feet above. 



List of specimens of Bufo halophilus. 



"U.S. 





Nat. 



Sex and 



Mus. 



Age. 



No. 





18719 



adol. 



18720 



Hiv. 



18721 



JUV. 



18722 



juv. 



18723 



ad. 



18724 



jun. 



18725 



ad. 



18726 



ad. 



18727 



adol. 



18728 



pjn. 



18729 



adol. 



18730 



adol. 



18731 



adol. 



18732 



adol. 



18733 



jun. 



18734 



jun. 



18735 



tadpoles 



18736 



do 



18737 



do 



Locality. 



Alti- 

 tude. 



Date. 



Collector. 



Remarks, 



Owens Valley, Alvord. Calif. 



Owens Valley, Bishop Creek, Calif. 



do 



do 



Owens Valley, Independence Creek, 



Calif 



do 



Owens Valley, Lone Pine, Calif.... 



do 



do 



do 



Round Valley, Tulare County, Calif. 



W hitney Meadows, Calif. 



Kings River, Calif 



Elizabeth Lake, Calif 



Monterey, Calif. 



Feet. 

 4,000 

 4, 000 

 4, 000 

 4,000 



6,000 

 6,000 



10,000 

 5,200 



East Fork, Kaweah River, Calif. 



do 



do 



About 



sea 



level. 



..do ... 



10, 200 

 10, 200 

 10, 200 



Juno, 26 

 June 29 

 June 29 

 June 29 



June 

 June 

 June 

 June 

 June 

 June 

 Aug. 

 Aug. 

 Aug. 

 July. 

 Sept. 



Oct. 1 

 Aug. 7 

 Aug. 7 

 Aug. 7 



Stephens 

 ...do ... 

 ...do ... 

 ...do .... 



...do ... 



...dp ... 



Nelnun. 



Palmer. 



...do ... 



...do ... 



...do ... 



Bailey. 



Nelson. 



Palmer. 



Bailey. 



...do ... 

 ...do ... 

 ...do .... 

 . . .do . . . . 



PI. in, fl; 



a-b. 



Bufo boreas nelsoni, subsp. nov. (PI. in, figs. 4 a-b). 



Diagnosis. — Similar to B. boreas: Skin between warts smooth ; snout 

 protracted, pointed in profile; webs of hind legs very large ; soles rather 

 smooth; limbs shorter, elbows and knees not meeting when adpressed 

 to the sides of the body; inner metacarpal tubercle usually very large. 



Habitat. — Southeastern California and western Nevada. 



Type.— JJ. S. Nat. Mus., No. 18742; Oasis Valley, Nevada, March 1G, 

 1891; F. Stephens, coll. 



This seems to be the southern form of Bufo boreas, distinguished from 

 the latter as above. Extreme examples of both forms are very dif- 

 ferent and would readily pass for distinct species, but specimens occur 

 in which one or the other of the characters are less developed, making 

 it expedient to use a trinominal appellation. 



On the other hand, both B. boreas and the new form here described 

 are quite well separated from B. halophilus and its northern race, B. 

 halophilus columbiensis, the difference in profile of the snout being quite 

 sufficient (coinp. pi. in, figs. Sa and 4a), not to mention the other char- 

 acters indicated in the diagnosis above. Their geographical distribu- 

 tion, as examplified by the material brought home by the Death Valley 

 Expedition, furnishes sufficient proof of the specific value of their differ- 



