86 NEW FISHES FEOM PACIFIC COAST GILBERT. 



eral along lateral Hue. Below lateral line au irregular series of small 

 pearly spots, most distinct anteriorly. A dark bar vertically crossing 

 cheeks. Gill membranes dusky. Pectorals black at base and on lower 

 rays, upper part white witU two irregular cross-bars. Veutrals dusky. 

 Anal white, margined with black. Caudal with a dusky cross-bar at 

 base and tip, mesially white. Dorsals translucent, narrowly edged with 

 black, and with narrow oblique, somewhat irregular, dusky cross-bars. 

 Several specimens from stations 2893 and 2959, in 145 and 55 fathoms. 



45. Icelinus tenuis sp. nov. 



Body slender, tapering into a very slender caudal peduncle, whose 

 depth is less than one-third its length, and half diameter of orbit. 



Depth of body 54^ to 5iin length. Maxillary reaching slightly beyond 

 middle of orbit, 2^ in head. Bands of teeth narrower than usual, pres- 

 ent on jaws, vomer, and palatines. Interorbital space narrow, half 

 diameter of pupil, slightly concave posteriorly, the ridges converging 

 anteriorly and meeting above front of pupil. Eye large, longer than 

 snout, 3;^ to .3f in head. Upper preopercular spine smaller, about as 

 long as pupil, with a short terminal process, and two or three upwardly 

 directed ones. Below this a simple spine directed backwards, and two 

 directed downwards and forwards. Nasal spines strong. Two strong 

 spines behind upper edge of orbit, and a single sharp one at end of occi- 

 pital ridge. Occipital region gently concave; no pit behind eyes. No 

 spine on opcrcle or suborbital, and no distinct spine on shoulder. 



A simple black ttap on upper rim of orbit posteriorly. No other 

 flaps on head, and usually none on plates of lateral line. 



Plates of lateral line as in related species, forty-one in number. Dor- 

 sal series of plates arranged in a double row as usual, but very short, 

 beginning under fifth dorsal spine and ending under first third of soft 

 dorsal, its length varying from slightly longer than head to two-thirds 

 its length, double throughout. Sides immediately behind axil of pec- 

 torals with about fifteen plates, similar to those of lateral line, but 

 smaller, scattered or showing a tendency to regular arrangement. 

 First ray of spinous dorsal very slender, filamentous, varying in length, 

 in adults reaching end of soft dorsal. The second spine is sometimes 

 slightly produced, but is never long. The two dorsals are entirely dis- 

 connected, the height of soft dorsal half or three-fifths length of head. 



Pectorals long in males, reaching much beyond front of anal, as long 

 as head. Veutrals nearly three-fourths orbit. 



Head 3^ to 31 in length ; depth, 5^ to 5^. D. X-17 to 19 ; A. 15 to 

 17. L. 5J inches. 



Color: Light olivaceous above, white below, the back with four black 

 cross-bars, the first under spinous dorsal, the second and third under 

 anterior and posterior parts of soft dorsal, the fourth at base of caudal. 

 Back and sides, including head, with pearly dots and lines ; those 

 on upper parts frequently curved and margined with dark. Spinous 

 dorsal with a small dark blotch posteriorly, and some dusky mark- 



