694 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
luerous, and are very difticult to distiiiguisli, all being very similar in 
form and coloration. The relations of this genus to Coitus are very 
close, (^oupu'^ai;, the sky ^ eidui^ to look.) 
«. Palatines with teeth ; ventrals I, 4 (except in 1059). 
h. Preopercnlar spine larf^e, strongly hooked; skin above with coarse prickles. 
(Tauridea* Jordan & Rice.) 
1054. U. spilota Cope. 
Olivaceous, finely speckled and mottled with darker; belly white; 
fins mottled. Body contracted at front of anal, subterete i)Osteriorly. 
Head very broad and flat; no occipital prominences; preopercnlar sinne 
extremely large, as long as eye, hooked upward; below it are three 
small spines directed downwards; snbopercular spine strong; space 
above lateral line behind head, covered with small stilf prickles, coarser 
than in U. aspera and farther apart, slightly hooked backward; no spines 
behind axil; isthmus broad, the gill-mendiranes fully joined to it, not 
forming a fold. Head 3f ; depth 5^. D. Aail-17; A. 12. Great Lakes, 
in deep water, and northward to Hudson’s Bay. 
(Uranidea spilota Cope, Proc. Acatl. Nat. Sci. Phila. 1865, 89. : Cottopsis ricei Nelson, 
Bull. Ills. Mus. Nat. Hist. J876: Tauridea spilota Jordan, Man. Vert. E. U. S. 2.55: Cot- 
topsis spilotHS Jordan, Proc. Acad. Nat. Sci. Phila. 1877, 81; Bean, Proc. U. S. Nat. 
lilus. 1881, 127; specimens from near Hudson’s Bay, said to have no palatine teeth.) 
hb. Preopercnlar spine small, more or less perfectly concealed in the skin, 
c. Skin almost everywhere villous. {Cottojysisi Girard.) 
1055. U. aspera (Rich.) J. & G. 
Grayish olive, much mottled and barred; fins finely variegated; 
usually a large black blotch on posterior part of spinous dorsal. 
Body rather stout, compressed behind. Head rather broad, trans- 
versely convex ; opercle and preopercle with the usual spines, all small 
and nearly concealed in the skin; interorbital space broad and flattish, 
broader than eye (in adults); skin covered with small close-set prickles, 
Ibrming a villous covering, the iirickles smaller, stiffer, and more closely 
.set than in the next species; head, belly, caudal peduncle, and space 
along dorsal smooth, or nearly so; pectorals reaching anal; ventrals, 
1, 4, nearly reaching vent; dorsal spine slender; lateral line complete, 
angularly bent below last rays of second dorsal. Head 3; depth 4^. 
H. X-21; A. 18. L. 10 inches. Streams west of the Sierra Nevada 
*Jorilan & Rice, Man. Vert. E. U. S. ed. 2, 1878, 255: type Cottopsis ricei Nelsou. 
(rm’pa, cow; ezSea, appearance.) 
t Girard, Proc. Bost. Soc. Nat. Hist, iii, 303, 1850; type Cottas aspcr Rich. (KorroS, 
Cottus; Qipii, appearance.) 
