122 SALMONID^. 



but few. Tail deeply lunated, almost forked Caudal and othier 

 fins unspotted. Does not often attain a greater weight than j&fteen 

 pounds. Branched rays usually fourteen. 



North-west Pacific coast. Enters Eraser's and Skagit Eivers. 



47. Salmo tnmcatus. 

 Salmo tnmcatus, Suckley, Ann. Lye Nat. Hist. N. York, vii. 1858, 

 p. 3. 



Body fusiform ; dorsal profile moderately arched ; anterior margin 

 oi dorsal fin much anterior to a point equidistant between the nose 

 and the insertion of the tail ; head small, one-thirteenth of the total 

 length. Teeth small, those of the vomer in a double series. Tail 

 small, its free margin, when extended, being almost straight, having 

 a very faint tendency to lunation. Scales generally large. Colours 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 spots 

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

 darker ; lower parts silvery white, this colour extending about an 

 inch above the lateral line, and merging itself irregularly into the 

 colour of the back ; no spots below the lateral line, which is faint 

 and of a bluish dusky colour ; lower fins pale and unspotted, their 

 tips somewhat darkish. 



An adult female from the Straits of Puca. 



XIV. Japan. 



Some Salmonoids from Japan are described by J. C. BreVoort in 

 ' Narrat. Exped. Amer. Squadr. to China and Japan,' vol. ii. ; the 

 materials used by this gentleman are some coloured (" spirited ") 

 dramngs executed by artists who had not the slightest acquaintance 

 with ichthyology. Thus, although their value is doubtful even for 

 those who will have specimens to compare with them, and although 

 they are absolutely useless without such specimens, yet Mr. J. C. 

 Brevoort has recognized one new, and two PaUasian species in them ! 

 viz. : — 



1. Salmo perry i, Brevoort, p. 273, pi. 9. fig. 1. 



2. orientalis. Pall. p. 275, pi. 9. fig. 2 {S. masou). 



3. leucomamis, PaU. p. 276, pi. 10. fig. 3. 



4. sp.? Young, p. 277, pi. 10. fig. 1. 



All, are said to be from Hakodadi. 



XV. Rivers of the eastern slope of the RocTcy Mountains. 



48. Salmo lewisii. 



Salar lewisii, Girard, Proc. Acad. Nat. Sc. Philad. 1856, p. 210, and 

 U. S. Paaf. R. R. Exp. Fish. p. 318, pi. 72. 



B. 12. D. 11. A. 11. 



Vomerine teeth in a double series. Body rather thick in the 

 middle region ; head moderate. Posterior extremity of the max- 



