12'2 EEPOET OF COMMISSIONER OF FISH AND FISHERIES. 



The colors of this char, as j>iveii by Richardson, arc obscure, as they 

 were based OH the appearance of a dried skin. Tliere appear to have 

 been yelh)w or orange spots along the sides. Lower parts white or yel- 

 low. We have been able to obtain no specimens for examination. 



24. SALMO NITIDUS, Eichardson. 



THE ANGMALOOK. 



Syn. — Salmo nitidus, Rich. Nat. Hist., App. Ross's Voy., p. Ivii; — Ibid. F. B. A., iii, 

 p. 171, PI. 82, fig. 1; PI. 86, fig. 2 ;— DeKay, Rcpiut, p. 242;— Stoker, 

 Synopsis ; — Gill, Catalogue Fishes E. Coast, p. 52. 

 Variety of S. alijjcs, (Rich.) 

 The Iviksarolc of the Greenlanders. 



Sp. Oh.— [Condensed from Sir John Richardson's description.] Knob 

 at point of lower jaw, received in notch between interiuaxillaries. Back 

 nearly straight. Teeth mnch as in S. alipes, as are also many other 

 ana-tomi(;al characters, for which see sp. ch. of S. alipes and " diagnosis" 

 below. Lower jaw, when depressed, slightly longer than from snout to 

 nape. Scales tiled, small, roimdish. 



Colors, (according to Cai)tain Ross :) Body above the lateral line, 

 deep greeii, softening towards the belly, which is of a beautiful yellow- 

 ish-red tint posterior to the pectoral pin. Under parts white, sliglitly 

 clou<led by yellowish-r(;d. On the sides several rows of red spots, prin- 

 cipally distributed between the lateral line and the yellowisli red of the 

 belly, varying in size, the largest being as big as a })ea. Dorsal fin like 

 the back. Under fins dusky-red, the anal paler, and the first rays of 

 the i)ectorals, ventrals, and anals white. 



Eai/ formula.— Br. 11-12 ,• D. 14^0 ; P. 17 ; V. 10 ; A. 12. 



Hab. — Small lakes in Boothia Felix. (Richardson.) 



DiAGNOSi;^. — In many characters this fish agrees with the S. parJcei, 

 fnohisj found in the head-waters of the Columbia, west of the Rocky 

 Mountains. The latter has more branchiostegals, and also light-green 

 spots on the back, not noticed in the description of S. nitidus. From 

 S. alipes, Richardson gives the following distinctive characters : Body 

 thicker than that of >S'. alipes ; belly more prominent, fins shorter, anus 

 farther back ; head less arched above and in profile ; mesial ridge and 

 lateral porous curves less promine'nt; no radiating lines above the orbit, 

 which is proportionately nearer the snout; upper jaw shorter. 



This fish, the 8. alipes^ S. bairdii, and S. parkei, agree in possessing' 

 characters almost sufficient to include them in a distinct subgenns. They 

 all belong to the chars, (subgenus SalDelimis of JSTilsson;) bnt in addi- 

 tion have an elongated, fleshy projection standing np from the ijoint of the 

 lower jaw, which is received into a toothless notch between the i)remax- 

 illaries. They, in addition, have a mark common also to the *S'. fontiualis, 

 Mitchill; this is in having the first rays of the pectorals, ventrals and 

 anals yellow, red, or white. None of the black-s[)otted trouts, or sal- 

 mon, have these rays in color specially distinguished from those of the 

 rest of the fin. 



