718 CONTEIBUTIONS TO NORTH AMEEICAN ICHTHYOLOGY IV. 



from snout; proopercnlar spine short, bifurcate; cranium plane above. 

 Upper part of bodj^ mesially, covered with minute, imbedded, non-im- 

 bricated, pectinate scales; anteriorly, small cirri, mostly bifid or trifid, 

 take the place of the scales. Head, especially above, with very many 

 similar cirri ; a fringe of cirri on edge of preopercle. Dorsal fins con- 

 tiguous, rather low; pectoral reaching past front of anal. Anal papilla 

 very large. Head 3.}; depth 4J. D. IX-17; A. 14; Y. I, 3; P. 16. L. 

 7 inches. Coast of California; abundant in rock-]30ols from Monterey 

 southward to Lower California. 



(Grd., Proc. Acad. Nat. Sci. Pliila. 1857, 201 ; Girard, U. S. Pac. R. R. Surv. Fish. 57: 

 Centridsrmlchthi/H anaf'is Giiuther ii, 171: Cottus criuUjer Guiither ii, 522.) 



a. Skin without scales or prickles. {OUgocoitus.) 



1103. O. maciilosus Grd. — Joltnnif. 



Usual color reddish brown, varying to gray, intense green or crimson 

 according to surroundings, the vivid colors developed in the presence 

 of similarly colored alga?; fins all barred; belly usually livid bluish or 

 greenish; lower side of head with white mottlings; northern specimens 

 with an ocellated black spot on front of spinous dorsal. Head slender, 

 narrowed above, the snout rather pointed ; maxillary reaching pupil ; top 

 of head with several scattered cirri ; a few on sides of head, none on 

 edge of preopercle; cirri on lateral line anteriorly and on front of back, 

 also on base of spinous dorsal. No scales or prickles anywhere; pre- 

 opercular spine forked. Front rays of anal enlarged and partly de- 

 tached in <?; anal papilla large (in <?); pectorals reaching well beyond 

 front of anal. Head 3|; depth 4^. D. VllI-lG; A. 12. L. 3 inches. 

 San Luis Obispo to Alaska, exceedingly abundant northward; one of the 

 smallest of marine Cottidce. 



(Girard, Proc. Acad. Nat. Sci. Pliila. 1850, 153; Girard, U. S. Pac. R. R. Surv. Fish, 

 56: Cenli-klennichthijs macalosns Giiuther, ii, 171.) 



aa. Month with very little lateral cleft; the head glohoid. (Bleunkotius* Gill.) 



1104. O. g-lotoaccps Grd. 



Dark olive, with obscure darker cross-bars; first dorsal with 2 dark 

 streaks above; fins generally barred with greenish, orange, or blue; 

 cirri mostly black. Body little compressed; head extremely short and 

 blunt, narrowed above, nearly everywhere convex. Mouth anterior, 

 short and broad, almost without lateral cleft; lower jaw shortest; max- 

 illary reaching past front of the small eye; interorbital space very nar- 



*Gill, Proc. Acad. Nat. Sci. Phihi. 1881, 166: type Oligocoitus gloViceps Grd. (Blen- 

 nius; Cottus.) 



