Jordan and Evermann. Fishes of North America. 1943 



gg. Anal rays 11 to IB, usually 13. 



h. Caudal peduncle very slender; its least depth not much 



greater than diameter of eye ; body and head profusely 



speckled. PUNCTULATUS, 2319. 



hh. Caudal peduncle deep, its least depth equal to length of 



snout; back and sides less distinctly speckled, 

 i. Head blunt, low, rounded anteriorly; body with 

 vague dark clouds or specks, not very distinctly 

 barred ; skin smooth or variously prickly, some- 

 times very rough, sometimes perfectly smooth. 



SEMISCABEli, 2320. 



ii. Head less rounded, with a median depression ; body 



usually with broad, oblique, dark bars; axil 



usually with some fine prickles, the back smooth. 



ICTALOPS, 2321. 



TAUUIDBA (ravpa, row; elfios, appearance): 

 l)b. Preopercular spine very large, as large as eye, and spirally hooked; back with 



stitlish prickles. 



j. Dorsal VIII, 17; anal 12; head very broad and Hat; body olivaceous, finely 

 speckled and motled. EICEI, 2322. 



COTTUS : 

 aa. Palatine teeth wanting (rarely a few developed in males). 



k. Preopercle with a spine at its angle, below which are 2 others directed 

 downward. 



I. Back and sides more or less prickly ; dorsals connected ; lateral line com- 



plete; preopercle with along claw-like spine; dorsal VIII, 17; anal 13. 



ONYCHUS, 2323. 



II. Back and sides smooth or prickly behind axil only. 



in. Preopercular spine long, curved upward in a spiral; dorsal fins low, 

 connected ; dorsals VII-19 ; anal 13. POLLICAEIS, 2324. 



mm, Preopercular spine curved upward ; pectoral as long as head ; dor- 

 sal VIII, 18; anal 14. COGNATUS, 2325. 

 mmm. Preopercular spine very short, hooked upward; dorsals well 

 connected, the spines low, the soft rays high; lateral line 

 incomplete. Lower preopercular spines well developed ; D. 

 VII, 21 ; A. 15. PERPLEXUS, 2326. 

 kk. Preopercle with a single short spine at its tip only, and no distinct spines 

 below it, the lower spines reduced to angles of the bone, 

 n. Posterior nostrils in short, but.conspicuous tubes;* dorsals connected; 



skin smooth or nearly so ; dorsal VII to X, 18 or 19 ; anal 13 or 14. 

 o. Lateral line very incomplete. KLAMATHENSIS, 2327. 



oo. Lateral line complete or nearly so. 



p. Dorsal spines IX or X. ALEUTICUS, 2328. 



pp. Dorsal spines VII. MINUTUS, 2329. 



7i?i. Posterior nostrils without tubes ; skin nearly smooth; D. VII or VIII 



16 to 18 ; anal 12 to 14. 

 q. Head moderate, 3^ to 4 in length. 



r. Mouth rather large, the maxillary 2 in head, reaching to 



opposite middle of eye. 



*. Depth 4 to 5 in length. BELDINGII, 2330. 



ss. Depth 6 in length. PHILONIPS, 2331. 



rr. Mouth very small, the maxillary 3f in head, reaching front 



of pupil. ANNJE, 2332. 



qq. Head larger, 3 in length; depth 5; body much spotted. 



SPILOTUS, 2333. 



* Not described in Cottus minutus. 



