JORDAN ON FISHES OP DAKOTA AND MONTANA. 



795 



Sahno confinis Jordan, Man. Vert. 2G1, 1876. 



Salmo confinis Joudax, Miin. Vert. ed. 2d, 273, 1878. 

 1850 — Salmo sijiiimetnca PitESCOTT, Silliman's Am. Journ. Sci. Arts, 2d series, xi, 340, 

 1850. (Lake Winnipiseogee.) 



Sahno symmetrica Suckley, Monograph Genus Salmo, 157, 1874. 



Salmo symmetrica Jokdan, Man. Vert. 261, 1876. 



Salmo symmetrica Jordan, Man. Vert. ed. 2d, 273, 1878. 

 1863 — Salmo toma Hamlin, Second Annual Kept. Nat. Hist, and Geol. Maine for 1862, 

 p. — . (Lakes of Maine.) 



Salmo toma Hamlin, Eept. Comm. Fish and Fisheries for 1872-73, 354, 1874. 

 1864 — Salmo adarondacus NORRis, Angler's Guide, p. — . (Adirondack Eegion.) 



The head and caudal fin of a large specimen from Chief Mountain 

 Lake. It does not differ in any obvious respect from Lake Michigan 

 specimens. On examination of specimens supposed to be typical of each 

 of the various nominal species included above, I am unable to see that 

 they differ in any respect likely to prove constant. 



Genus SALMO Linneeus. 



Subgenus SALAR Valenciennes. 

 15. — Salmo stomias Cope. 



Big-moutlied Trout. 



1872 — Salmo (Salar) stomias Cope, Hayden's Geol. Surv. Wyoming for 1870, 433. 

 Salmo stomias Cope, Hayden's Geol. Surv. Montana for 1871, 470, 1872. 

 Salmo siomias OPE & Yarrow, Wheeler's Esi^l. W. 100th Mer. v, 684, 1876. 

 Sahno stomias Hallock, Sportsman's Gazetteer, 346, 1877. 

 Salmo stomias var. stomias Jordan, Man. Vert. ed. 2d, 358, 1878. 

 Salar stomias Jordan, Catalogue of Fishes N. A. 431, 1878. 



This speci'^s is repre3ented in the collection by a single head, 5^ iLches 

 in length, accompanied by the caudal fin. Before seeing specimens of 

 this species, I bad presumed that it might have been based on some one 

 of the numerous varieties of Sahno pleuriticus Cope. There can be, how- 

 ever, no doubt of its specific distinctness. The following description is 

 taken from this head, No. 21199, from Chief Mountain Lake : — 



Head very long, rather pointed, hroad and flat ahove, not carinated ; the snout not 

 at all gihbous or convex from the eyes forward, the head thus having a deiiressed and 

 pike-like appearance. 



Mouth very wide, the broad curved maxillary reaching much beyond the eye ; eye 

 moderate; snout in this specimen prolonged, emargicate at the end, receiving the 

 swollen tip of the lower jaw ; caudal fin scarcely emarginate and unspotted, as is the 

 head. 



Bull. iv. No. 4 4 



