1. SAL-AiO 117 



grow lean from fasting, breeding, and exertion, this species is plump 

 and well fed, and, with S. caUaris only, does not perish in the 

 winter." It does not much exceed a length of 18 inches 



The Fario clarkli (Girard, Proc. Acad. Nat. Sc. Philad. 1856, p. 219 ; 

 and U. S. Pac. R. R. Exp. Fish. p. 314, pi. 71. figs. 5-8), named l^ahno 

 masoni by Suckley (Nat. Hist. Wash. Terr. p. 345), is some Salmo- 

 noid in the Parr-state, probably a young Salmo purjouratus. 



34. Salmo stellatus. 



Oregon Brook-Trout. 



Fario stellatus, Girard, Proc. Acad. Nat. Sc. Philad. 1856, p. 219 ; and 



U. S. Pac. E. R. Uxj}. Fish. p. 310, pi. 69. figs. 5-8 ; Suckley, Nat. 



Hist. Wash. Terr. p. 346, with the same figures. 



B. 12. D. 12. A. 12. L. lat. 155. L. transv. 30/35. Ca)c. pvl. 33. 



Vert. 59. 



Similar to S.purpuratu^, but with considerably smaller scales. The 

 posterior point of junction of operculum and suboperculum is midway 

 between the upper end of the giU-opening and the lower anterior 

 angle of the suboperculum. Praeoperculum broad, with the lower 

 limb very indistinct. Snout of moderate extent ; maxillary narrow 

 and feeble, extending to the vertical from the hind margin of the 

 orbit in specimens 7 inches long, and beyond it in older ones. Den- 

 tition moderately developed ; vomerine teeth in a zigzag series, rarely 

 placed in a pair. Caudal fin emarginate in young specimens, the 

 middle rays being half as long as the outer ones, and truncate in 

 adult ones. There are fifteen or sixteen scales in a series obliquely 

 descending from behind the adipose fin to the lateral line. Head, 

 and body, dorsal and caudal fins covered with black specks. 



A non-migratory Trout from the fresh waters of British Columbia, 

 and of the Oregon and Washington Territories. 



a-d. Skins, from 12 to 14 inches long. Saumass Lake. From 



Mr. J. K. Lord's Collection. 

 e-f. Young, 7 inches long. River Skagit. From Mr. J. K. Lord's 



Collection. 



35. Salmo penshinensis. 

 Salmo penshinensis, PaU. Zoogr. Hoss.-As. iii. p. 381 



We have examined the typical specimen of this species ; it is the 

 skin of an adult male fish. As far as we can judge from this spe- 

 cimen, this species is very closely aUied to S. mmhricus : we cannot 

 find any external distinctive characters ; and if the two fish do not 

 differ in the internal .characters, we doubt not that they are spe- 

 cifically the same. According to PaUas this migratory Trout would 

 ascend from the Bay of Penjinsk into the river Worofskaja. 



Valenciennes has identified this species with S. rossii. Richards. : 

 having the typical specimens of both fishes before us, we fi"d that 

 they are specifically, if not geucrically, quite distinct. 



