Jordan and Evcrmann. — Fishes of North America. 1947 



Lewistou, Idaho; Walla Walla River at Walliila, Oregon; Hangman 

 Creek at Tekoa, Washington ; Natchess Eiver at North Yakima, Washing- 

 ton; Newauknm River near Chehalis, Washington; Snoqualmie River at 

 .Snoqualmie Falls, Washington." 



The salient features of this species are: (1) the pointed, wedge-shaped 

 protile of head, as viewed from above, this contrasting strongly with the 

 usually broadly rounded contour of other species; (2) the wide horizontal 

 mouth, ([uite at lower profile of head; (3) the noticeably concave inter- 

 orbital and occipital regions'; (4) the very broad and long palatine band 

 of teeth; (5) the rather slender body and the extremely slender caudal 

 peduncle, the latter expanding fan-like at base of caudal fin; (6) the 

 dorsals usually separate ; when united, at extreme base only; (7) lateral 

 line complete; (8) sides usually well invested with prickles, which are 

 triangular and coarse, and less closely placed than in asper. They are 

 arranged more or less definitely in oblique series. There is considerable 

 variation in the completeness of the investment, and in one specimen from 

 ChehalivS an axillary patch only is present. 



The specimens from Chattaroy and from Snoqualmie Falls are referred 

 to this species with doubt as to their identity. The following table will 

 give an idea of the amount of variation in number of fin rays found in 

 this species : 



(poOoi^, poBid';, rushing of the torrent.) 



Gottus rhothcm,TlosA Smith (Mrs. Eigenmann), Proc. F. S. Nat. Mus. 1882, 347, Spokane 



Falls, Washington. (Type, No. 30737.) 

 Uranidea rhothea, Jokdan & Gilbert, SjTiopsis, 953, 1883. 



2318. COTTUS SHASTA, Jordan & Starks. 



Head 3 to 3i; depth 4*. D. VIII or IX, 17 or 18; A. 13 to 15; eye nearly 

 5 in head; maxillary 2i; third or fourth dorsal spine 3f ; highest soft ray 

 about 2; pectoral IjV; caudal 1^. Body not much compressed; caudal 

 peduncle rather wide, about equal to snout; mouth rather large, the max- 

 illary reaching to posterior margin of pupil; teeth in a moderate band on 

 jaws and vomer, in an exceedingly narrow band on front of palatines; 

 interorbital space not much over i eye ; upper preopercular spine short, 



