410 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



46. Sebastolobus altivelis sp. nov. (Plate 23.) 



Body slender, depth 3| in length; head 2J; lateral line 33-35 pores. Dorsal xv, 9; 

 anal in, r> ; ])ectoral 22. Mouth large, 2 in head, maxillary reaching posterior margin 

 of pupil. Mandihle laterally and in front shutting within the wide premaxillary band 

 of teeth, its tip fitting into an emarginatiou between premaxillaries, and bearing a 

 short symphyseal knob. Bands of teeth on mandible, vomer, and palatines narrow. 

 Eye very large, 3 in head, 3 times iuterorbital width. Interorbital narrow, scaled, 

 concave, Avith 2 low, rounded ridges. Cranial ridges strong, terminating in sharp 

 spines, agreeing with those in S. alascanus and S. macrocMr. Preorbital wide, par- 

 tially overlapping middle third of maxillary, posteriorly with a forwardly directed 

 triangular spine, in fnmt of which is a long slit-liko mucous pore. A blunt tubercle 

 directed forward irom front of each premaxillary, less prominent than in S. alascanus. 



Dorsal spines long and comparatively strong, the third always the highest, the 

 outline of fin behind it straight or concave, never convexly rounded, as in S. niacrochir 

 and »S. alascanus. In the type specimen the longest spine is contained If times in 

 length of head. The spine before the last is scarcely longer than the one preceding, 

 the last spine again lengthened. Second anal spine usually curved, much longer 

 and stronger than third and longer than soft rays, its length If to 2 in head. In 

 the type it is abnormally curved, as shown in the accompanying figure. Veutrals 

 reaching to vent; pectorals to front of anal. Pectoral fin very broad, the lower 

 seven rays thickened and extended beyond membranes, the lobe thus formed subject 

 to much variation, being unusually short in the type. Scales rough ctenoid. Man- 

 dible scaled at base only, the head otherwise completely invested, including the 

 branchiostegal rays and membranes. Fin membranes covered with fine ctenoid 

 scales. 



Color, red ; a dark blotch on membranes between first and third dorsal spines, and 

 a large one beginning back of fourth spine and extending along entire upper edge of 

 fin ; edge of pectoral, ventral, anal, and sometimes caudal, black. In some speci- 

 mens a black blotch on membrane back of second anal spine, as in S. macrocMr. 

 Opercular lining blackish, this visible externally as a dusky blotch. 



The type is a specimen 325 mm. (12f inches) long, taken south of the Alaskan 

 Peninsula at a depth of 625 fathoms (station 3338). No other specimens were secured 

 during the Alaskan expedition of 1890, but the species is almost equally abundant 

 with S. alascanus in deep water off the coast of California. From S. alascanus it is 

 distinguishable at sight by the contour of the siiiuous dorsal fin, the smaller number 

 of dorsal spines, and the dusky lining of the opercle. From S. niacrochir, with which 

 it agrees in its fin formula, it is distinguished by the greater height of both dorsal 

 and anal spines, and in the different contour of the spinous dorsal. 



Family COTTID-ffi. The Sculpins. 



47. Hemitripterus marmoratus Bean. 



Several small specimens were secured at stations 3224, 3257, 3258, and 3311, in 

 Bering Sea, north of Unalaska Island; depths, 70 to 121 fathoms. They agree with 

 the types in having but 14 dorsal spines, the first four of which are not noticeably dif- 

 ferentiated. The second dorsal contains 11 or 12 rays, and the anal fin 13. The last 

 two rays of the anal fin are approximated at base, but do not evidently constitute 

 a divided ray. 



48. Psychrolutes zebra Bean. 



Taken abundantly in shallow water south of the Alaskan Peninsula, thence west 

 to and through Uuimak Pass, along the northern shore of Unalaska Island, and in 

 Bristol Bay. The depths range from 31 to 121 fathoms, at stations 3213, 3215, 3216, 

 3217, 3219, 3222, 3223, 3224, 3225, 3257, 3258, 32.59, 3263, 3265, 3272, 3310, 3311, 3313, 

 3322, and 3334. The spinous dorsal is continuous with soft dorsal, there being no 

 notch between the two. 



