156 SALMONIDJi. 



Fario argyreus, Girard, Proc. Acad. Nat. Sc. Philad. 1856, p. 218 ; 

 and U. S. Pac. R. R. Exp. Fish. pi. 70, p. 312. 



B. 14. D. 13. A. 15-17. L. lat. 125-130. L. transv. ?^. 

 C«c. pyl. 73. Vert. 64. 



In habit similar to Salmo solar. Piiv'^perculum irregularly cres- 

 cent-shaped, with the margins rounded, and with the angle very 

 obtuse ; it is very broad, as broad as, or broader than, the orbit. 

 Vomerine teeth rather feeble, in a single series, a part of them being 

 lost with age. Teeth on the tongue pi-es6nt*. The scale-like ap- 

 pendage in the axil of the ventipal long, half as long, or more than 

 half as long, as the fin. Caudal fin forked. There are twelve scales 

 in a series obliquely descending torwards from the axil of the adipose 

 fin to the lateral Ihie. 



A male, 32-4 iiicheslong, from the Y\ ^onlliver. — Snout very much 

 produced, both jaws forming a hook, the upper being bent down- 

 wards, the lower upwards. The intermaxillary teeth and the an- 

 terior ones of the lower jaw are exceedingly strong, especially the 

 pair nearest to the symphysis, and hook-Hke. The maxillary is feeble, 

 extending far beyond the orbit. Skin thickened, especially on the 

 back. Caudal fin with the outer ray* more than twice as long as 

 the inner ones. Belly dark brown. 



A male, 23 inches long, from Vancouver Island difiers from the 

 former only in having the jaws less curved into a hook. The teeth 

 on the tongue form two series, and are rather strong and closely set. 



A male, 20 inches long, evidently taken before spawning, has the 

 snout pointed, btft none of the jaws are bent ; the maxillary is rather 

 feeble, extending backwards to below the hind margin of the orbit. 



A female, 2,2 inches long (skin from PaUas's Collection), has the 

 snout much shcfrter, and a feeble maxillary which just reaches to 

 below the hind margin of the orbit. The skin is scarcely thickened, 

 the scales on the back being very small. 



Femxiles, 12 lynches long, from Vancouver Island, do not differ from 

 older, ones, except in having the caudal fin more deeply excised, the 

 length of the middle rays being two-fifths of that of the outer ones. 

 These specimens are silvery, immaculate, with the exception of a few 

 spots on the head. Dorsd and caudal fins blaokish. 

 a. Male, 23 inches long : stuffed. Vancouver Island. Collected by 



Mr. J. K. Lord. 

 h. Female, 12 inches long. Esquimalt Harbour. Collected by Mr. 



J. K. Lord ; presented by Earl Russell. 

 c. Female, 13 inches long. Esquimalt Harbour. Collected by Mr. 



J. K. Lord ; presented by Earl EusseU. 

 d-e. Young. Bay of San Francisco. Purchased of Mr. Gruber. 



Besides the specimens mentioned, I have had for comparison the 

 types of S. dermatinus (Richards.), <S. consuetus (Richards.), and two 

 flat skins from PaUas's Collection, about which a few Avords must 

 be added. They are marked " 91. Salmo lexmchthys " and " 76. Sdl- 



* They arc lost in tlie typical specinicii of 6'. dermafinus, which is probably 

 accidental. 



