NEW OR LITTLE KNOWN FISHES. 207 



myself forced to agree with Admiral Beardslee in the 

 opinion that each of these forms is distinct from any pre- 

 viously recorded or named. The two are allied to each 

 other, rather than to any other form, and the nearest af- 

 finities of both seem to be with the steelhead trout (Salmo 

 gairdneri) rather than any other. But placing the two 

 as subspecies of Salmo gairdneri is simply a provisional 

 arrangement, and there is just as good warrant for regard- 

 ing each as a distinct species. 



From all forms of Salmo gairdneri both the new forms 

 differ in the large size of the head as well as in coloration 

 and in the form of the snout and opercles. The size of 

 scales, the form of the gill -rakers, the form of the oper- 

 cle, the form of the pyloric coeca, the outline of the cau- 

 dal, and the coloration, are different in the two forms. 



4. Salmo gairdneri crescentis Jordan & Beardslee, n. 



subsp. Speckled Trout of Lake Crescent. 



Plate xxii. 

 Head 3-f in length to base of caudal; depth 5; exposed 

 portion of eye 6 in head, 1^3 in snout; scales 32-151-34, 

 151 cross -series, 83 in front of dorsal; dorsal with 10 

 branched rays, anal with 11; branchiostegals 10; gill- 

 rakers 6-f-n, counting rudiments, these very short and 

 thick, the longest but ± \ inches in length, 18^2 in maxilla- 

 ry; mouth large, maxillary extending much beyond eye, 1% 

 in head, with about 20 teeth; tongue with the usual teeth; 

 teeth on vomer in zigzag series; hyoid region of tongue 

 without teeth. Snout 3^ in head; preorbital very nar- 

 row, not so wide as maxillary adjacent to it; the posterior 

 suborbitals longer than eye, 5^ in head; opercle and 

 subopercle very narrow, scarcely as wide as eye, the free 

 part of opercle 6% in head; interorbital width 4^ in 

 head. Origin of dorsal in middle of length of body, its 

 margin straight, anterior 2 x / 2 times posterior, and slightly 



