from the North- West Coast of America. 3 



sion, and for many years a resident of Washington Territory. 

 To Mr. Gibbs more than to any other individual am I indebted 

 for rare specimens in all branches of Natural Plistory, and 

 especially for information, aid, advice, and encouragement 

 while endeavoring to elucidate the history of the Salmonidae of 

 the IST. W. coast. 



8almo truncatus, Suckley. 



Short-tailed Salmon : Square-tailed Salmon. 



Typical Specimen No. 1134, Smithsonian Collection. 



The specimen upon which the description of the present 

 species is based was an adult female, obtained by the writer in 

 the Straits of Fuca, in February, 1857. Its body was fusiform, 

 in its dorsal profile resembling somewhat the S. quinnat 

 EicH. It was, however, more slender than that species, and 

 differed greatly in the form of the head and tail, besides having 

 other marked characteristic distinctions. 



Sp. Ch.— Body fusiform ; dorsal profile moderately arched ; anterior 

 margin of dorsal fin much anterior to a point equidistant between the 

 nose, and the insertion of the tail ; head small ; jaws fully provided with 

 small teeth ; tail small, its free margin, when extended, being almost 

 straight, having a very faint tendency to lunation ; scales generally large. 

 Colors of the fresh run fish, back of head, back, dorsal and caudal fins 

 bright blue, spotted on the head with roundish, on the fins with oval 

 spote of black ; the blue of the back is silvery, that of the head and fins 

 darker ; lower parts silvery white, this color extending about an inch 

 above the lateral line, and merging itself irregularly into the color of 

 the back ; no spots below the lateral line, which is faint and of a bluish 

 dusky color; lower fins pale and unspotted, their tips somewhat darkish. 



From the vague distinctions separating the different species 

 of Salmonidae, which, although frequently obviously distinct, 



