COUES AND YARROW ON HEEPETOLOGY. 289 



found to be very commoQ iu the above-named localities. It was also 

 procured on the Yellowstone by Mr. Allen. The palmation of the feet 

 renders it much more decidedly aquatic in habit than is usual in this 

 genus. I found it swimming freely in the lake, as well as in various 

 streams and pools about the eastern base of the Mountains. Specimens 

 were taken from the stomach of Salmo namayeusli and other fish of the 

 same genus in this locality, further indicating its aquatic nature. The 

 colors of the specimens inhabiting these clear cold waters are notably 

 fresh and firm. 



Family EANID^. 



Genus RANA. 



Ran A. HALECINA. Kalm. 



Leopard Frog. 



"Eanajnpie^is, Gm.", Syst. Nat. 13th ed. 1788, 1052 (nee auct.). 



Bana halecina, Kalm. — Daud. Hist. Nat. Rept. viii. 1803, 122. — Hael. Journ. Acad. 

 Nat. Sci. Phila. v. 337 ; Med. and Phys. Res. 102, 224.— DeKay, N. Y. Fauna, 

 iii. 1842, 63, pi. 20, f. 19.— Holbr. N. Am. Herpet. iv. 1842, 91, pi. 13.— Bd. P. 

 R. R. Rep. X. 18.59; Whipple's Route, Reptiles, 45. — Coop. & Suckl. N. H., 

 Wash. Terr. 1860, 304, pi. 29, f. 7.— Havd. Trans. Amer. Phil. Soc. xii. 1862. 

 177.— Cope, Proc. Acad. Nat. Sci. Phila. 1866, 301.— Allen, Proc. Bost. Soc, 



Nat. Hist. xvii. 1874, 70. 



S2}ecimms. 



1064, lis, ter, etc. Near Pembina Mountains. July 9, 1873. Numerous specimens. 



n081. Souris River. Aug, 16, 1873. 



? 1081, Us. Souris River. Aug. 16, 1873. 



1118. Wolf Creek. June 28, 1874. 



1118, his. Wolf Creek. June 28, 1874. 



?1167. Head of Milk River. Aug. 14,1874. 



A series of specimens, demonstrating the general dispersion of the 

 species in the permanent waters of the region explored. It occurs in 

 Washington Territory, and I have found it in New Mexico and Arizona, 

 as well as in various localities in the Easter-u United States, where it is 

 one of the most abundant and well-known species, conspicuous in its 

 size, rich coloration, and agility. 



The common Western form is Bana halecina herlandieri, which is only 

 distinguished from E. halecina by its larger size and generally coarser 

 and more pustulated skin. The specimens represent ^^ berlandieri''\ but 

 this we are disinclined to adopt without further investigation of its 

 alleged distinctness. 



Rana septentrionalis of Baird (Proc. Phila. Acad. 1854, p. 61) is accred- 

 ited with a range from " Canada to Montana", but was not observed. 

 Bull. iv. No. 1—19 



