G86 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



1041. H. cavifrOBJS Lock. 



Very similar to the preceding, but with the upper surface of the head 

 more uueveu, the coucavity of the interocular area more marked, and 

 the dorsal fin with more spines. Head equalling depth, about 3^ in 

 total length with caudal. D. IV, XlV-13; P. 20 5 V. I, 3; A. 14; Lat. 

 1. 44. L. 16 inches. Kodiak, Alaska; perhaps not distinct from the 

 preceding. 



(Lockingtou, Proc. Acad. Nat. Sci. Phila. 1880, 233: 1 Cotius villosus Pallas, Zoogr. 

 Ross.-Asiat. iii, 129, 1811.) 



362.— ASCEI^ICMTMYS Jordan & Gilbert. 



(Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 264: type Ascelichthys rhodorus Jor. & 

 Gilb.) 



Body plump, fusiform, tapering backward, covered with loose smooth 

 skin; head broad, depressed, its upper surface evenly and weakly con- 

 vex; a hooked preopercular spine; no nasal spines; a supraorbital cir- 

 rus; teeth on jaws, vomer and palatines; no slit behind fourth gill; gill- 

 membranes broadly united, free from the isthmus; spinous dorsal low; 

 the spines slender, almost concealed in the membrane; pectorals broad; 

 ventral fins wanting. Small fishes of the rock pools of the North Pacific. 

 («, I)rivative; <tz£Aoc, leg; j/^wr, fish.) 



1042. A. rhodorws Jor. Sc Gilb. 



Dark olivaceous, sometimes with saddle-like pale blotches; lips rosy; 

 spinous dorsal dusky, edged in life with bright crimson; other fins 

 dusky, edged with paler, the pectoral slightly barred. Head low, 

 rounded anteriorly; maxillary reaching to posterior border of eye. oSTo 

 scales, prickles, or barbels anywhere, except a fringed cirrus over the 

 eye; preopercle with a short, simple, strongly hooked spine; spines 

 diiected downwards and forwards on subopercle and interopercle; lat- 

 eral line continuous. Dorsal fins connected by membrane, the spines 

 low, weak, nearly uniform; soft dorsal nearly twice as high as spinous; 

 pectorals about reaching vent. Head 3; depth 5. D. IX-19; A. 15; 

 P. IG. L. 5 inches. Pacific coast; Sitka to Cape Mendocino; abundant 

 among rocks between tide-marks. 



(Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 2(34.) 



363.— PSYCHROLiUTES Gunther. 



(Giiather, Cat. Fish. Brit. Mus. iii, 516, 1861: type Fsychrolnies paradoxus Gtluther.) 



Body tadpole-shaped, tapering from the head to the very slender tail, 

 covered with very loose, naked, movable skin. Head large, depressed, 



