1896 Bulletin //, United States National Museutn. 



of lateral line; none of the dorsal spines elevated; pectorals reach- 

 iug slightly beyond origin of anal. Color as in T. tenuis, but the light 

 spots on upper parts of body not elongate, and not dark margined: no 

 conspicuous dark bar below orbit; anal fin ti'anslucent in the specimen 

 here described, a female. Length 5^ inches. Southern California; 1 

 specimen known. (Gilbert.) (ocwZaiMS, large-eyed.) 



Icelimts octdattis, Gilbert, I'roc. U. S. Nat. Mas. 1890, 88, off Santa Barbara Islands at 

 Albatross Station 2935, in 124 fathoms. (Coll. Gilbert.) 



2277. ICELIXUS BOKEALIS, Gilbert. 



Head 2|; depth 4f to 5 A ; eye 4 in head. D. IX or X, 16; A. 13 or 14; P. 

 16; lateral line 39. Very similar to Icclhius ocnlatus, but differing in the 

 large size of the preopercular sjiine, the smaller, less elliptical eye, the 

 wider interorbital space, less abruptly expanding anteriorly, the lower 

 occipital ridges, and in the much smaller size. Body slender, tapering 

 rapidly backward to caudal i)eduncle, whose least depth is 3f to 4J in its 

 length ; head long, smaller than in Icelinus ocuJatna; occipital ridges blunt, 

 the included space gently concave, not pit-like ; interorbital space wider 

 than in Icelinus oculatns, not distinctly concave, the median ridge A^ery 

 faint, the width about 4 in eye (in oeulatus about 10 iu eye) ; supraocular 

 and occipital ridges rugose or minutely pitted; 2 conspicuous mucous 

 pores behind each ey*>, the anterior margins often elevated to form a spi- 

 nous projection; mouth large, extending beyond vertical from pupil, 2J 

 in head; teeth in narrow bands on jaws, vomer, and palatines; the 2 

 anterior pores on mandible open together at symphysis as in all the other 

 species of the genus except Icelinus oculatns, where they open separately, 

 on either side of the symphysis ; preopercular spine large, about as large 

 as eye, with 3 antler-like processes directed upward; below this a weak, 

 spinous projection directed backward (wanting in many specimens), and 

 2 stronger ones downward and forward; a spinous point at the lower 

 angle of subopercle ; an indistinct spine terminating in occipital ridge ; 

 armature of sides as in Icelinus oeulatus, the dorsal series of plates extend- 

 ing continuously onto the back of caudal peduncle; no scattered plates 

 behind pectorals ; a large, rather broad supraorbital flap, bifid or trilid, 

 or occasionally with more than 3 terminal filaments ; the height of flap 

 eciuals or slightly exceeds diameter of pupil; a white filament near tip of 

 maxillary; 2 pans on occipital ridges; 1, not wholly constant, on cheek 

 overlying suborbital stay; a few scattered ones accompanying plates 

 of lateral line; none of the dorsal spines elevated; pectoral fins reach- 

 ing slightly beyond origin of anal. Color olivaceous above, sides of head 

 and body Aermiculated and blotched with olive brown, esx)ecially along 

 middle of sides; white below nearly to lateral line; the back with 4 

 black cross bars as in leeUnns oeulatus; a dark blotch on cheek, and a dark 

 streak forward from eye; membrane between first 2 spines of first dor- 

 sal dark; usually a black terminal bar posteriorly; second dorsal, pec- 

 torals, and caudal with faint oblique bars; no dusky patch at base of 

 pectoral; anal translucent. Length 21 feet. Aleutian Islands, coast of 



