316 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



Var. stomias (Cope) J. & G. 



Body short and stout, llead large and wide, above broad and flat, 

 without keel, with wide mandible and mouth, the end of the maxillary 

 extending half the diameter of the eye beyond the orbit. Eye 4 5 in head. 

 .Maxillary bone of nearly uniform width. Caudal lin truncate. Gen- 

 eral coloration of S. spilurux, the black spots most numerous posteri- 

 orly. Hcad4j; depth 4k ]J. 12; Jr. 10; scales 42 above lateral line, 

 which probably contains about 200 scales. L. 24 inches. Kunsasltiver 

 to Upper Missouri. (Cope.) Like S. spilunis in its large mouth and 

 very small scales, but differing in the presence of hyoid teeth and in the 

 broad, flat head. We have seen, only the head of an old male of this 

 form, but think it will prove to be a variety of S. purpuratus. 



(Salmo stomias Cope, Haydeu's Geol. Surv. Wyom. 1870,433, 1872: Salmo stomias Jor- 

 dan, Hayden's Geol. Surv. Terr. 1878, 795.) 



Var. Iiciisliawi Gill & Jordan. Lake Tahoe Trout; Silver Trout; Ulack Trout. 



Body elongate, not greatly compressed. Head comparatively slender 

 and long-acuminate, its upper surface very slightly carinated ; muzzle 

 somewhat pointed, but bluntish at the tip; head not convex above; 

 maxillary rather short, about as in purpuratus^ not reaching much be- 

 yond the eye. Vomeriue teeth as usual; a small, rather narrow, but 

 usually distinct patch, on the hyoid bone. Dorsal tin small; caudal fin 

 short, rather strongly forked. Scales medium. Coloration dark, the 

 sides silvery; back about equally spotted before and behind; sides with 

 rather distant spots; belly generally spotted; head spotted even to the 

 snout; dorsal and caudal also spotted. Head .'5;'; depth 4. D. 11; A. 

 12; scales 27-100-27 to 37-184-37; cosca 50-GO. L. 18 inches or more, 

 usually weighing 5 or C pounds, but occasionally 2.1-.' 50. Lake Tahoe, 

 P\ i amid Lake, and streams of the Sierra Nevada. Evidently a variety 

 of Xftliiin imri>ur<itUN, but with a longer and more conical head. A line 

 trout, nosv common in the San Francisco markets. 



(Sdlino lifitxliiiiri (iill A. .Ionian. Man. \Vn. ril. ','. :'..".8: Salmo lienxhatci ai:d Salmo 

 tMi/i/nl'li .Ionian A I Imshaw, Kept. Chief Kn-., l~7~. App. NN, 1'JO, ll'T, phiti-: Salmo 

 hi Kxltan-i .Ionian, 1'roc. I'. Nat. Mus. i, 7.">, 1-7.-'.) 



151. SALVE JLIi\US Kichanlson. 



GluvrrB. 



(Ilaionc DrICay: I'liihln Knpp.) 

 (Nilsson; Kii-lianlson, Fauna I'.ur.-A r. iii, 170, ISM: t\|ic Sulmo xulccHnitii L.) 



Body moderately elongate. .Mouth large, or small. Teeth of jaws, 

 palatines, :ind tongue essentially as in >sW/m>, the hyoid patch present 



