: ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 409 
thethird. Soft anal rays higher than soft dorsal, 24 in head. Caudal well notched. 
Ventrals long, reaching vent. Pectorals Jonger, reaching nearly to front of anal. 
| Gill-rakers long, clavate, half diameter of orbit, 25 on anterior limb of arch. 
_ Scalesrough ctenoid, covered with many accessory minute ones, which are especially 
-abundant on head and nape. The head is wholly scaled, including the interopercle, 
maxillary, and mandible, and the outer branchiostegal rays. The anterior surface 
of the pectorals and the outer caudal rays are closely invested with minute ctenoid 
scales, which extend well toward the tips; they also invest the soft dorsal and anal 
‘fins. About 58 or 60 series of scales above lateral line, running obliquely downward 
_and backward. 
Color: Bright carmine red, lighter on belly. Dorsal dusky, edged with black. 
_An elongate olive-brown blotch along base of soft dorsal; a shorter one under the 
‘last spines, and a faint one under the middle of spinous dorsal, the latter extending 
| farther down on sides. A dark blotch on back of caudal peduncle. Belly silvery, 
‘washed with red. <A dark blotch on opercle and one on axil; a crossbar on occiput, 
one on snout and two bars on cheeks, dusky. Lower lip and tip of mandible blackish; 
‘mouth and gill-cavity dusky. Peritoneum jet-black in the young, varying from black 
‘to gray in adults. Fins all red, the spinous dorsal broadly margined with blackish. 
|44. Sebastodes diploproa Gilbert. 
Station 3349, near Point Reyes, California, depth 239 fathoms. 
|45. Sebastolobus alascanus Bean. 
Resembling closely S. macrochir, but differing constantly in the increased number of 
‘dorsal spines, 16 (17 in one specimen) instead of 15, and in the longer second anal spine. 
Head 22 in length; depth 4 (in specimen 360 mm. long). Pores of lateral line 35. 
Dorsal xvi, 9; anal 111, 5; pectoral 21. Mouth large, the maxillary nearly reaching 
vertical from posterior border of orbit, 2 to 24 in head; its width greater than diam- 
eter of pupil. Premaxillary band of teeth wide, shutting largely outside mandible 
in front and on the sides; a conspicuous tubercle at tip of each premaxillary with a 
\deep emargination between the two, into which fits the tip of the mandible. A 
‘small knob at mandibular symphysis. Eye large, 3} to 34 in head, 2? times the 
interorbital width. Cranial ridges and spines about as in the other species of the 
(genus, but the occipital ridges not strongly diverging, as in 8, maecrochir. Preorbital 
(posteriorly with aspinous point, as in S. altivelis. 
Dorsal spines low, the contour of the fin evenly rounded, the spines increasing 
Tegularly from the first to the fourth, then as regularly diminishing to the fourteenth; 
the fifteenth and sixteenth again lengthened. The longest spine is contained from 
'24 to 24 times in the length of the head. Second anal spine longer and stronger 
than third, equaling or exceeding length of soft rays, its length 2 to 24 in that 
of head. Ventrals usually scarcely reaching vent, the pectorals not reaching front of 
vanal. Lower pectoral lobe unusually broad, contains 7 to 9 thickened rays. Head 
less completely scaled than in S. altivelis, the branchiostegals, mandible, maxillary, 
and lower portion of preopercle wholly naked. 
Color red. A black blotch occupies the membranes of the first three dorsal spines, 
a second extends from the sixth to the eleventh spines. Margin of pectoral and 
‘ventral fins black. No black blotch behind second anal spine. Peritoneum and 
lining of gill-cavity white. 
This species differs from S. altivelis in the lower, longer, evenly rounded spinous 
dorsal, the white lining of the gill-cavity, and the partly naked head. It was 
taken abundantly on the Alaskan expedition, being represented from the following 
Stations: 3227, 3324, 3330, 3331, 3332, 3337, 3338, 3339, 3340, 3343, 3346, 3347, and 3348. 
These are located in Bering Sea, north of Unalaska Island; in the North Pacific 
southeast of Unimak Island, and off the coasts of Washington, Oregon, and Cali- 
fornia. They represent depths of from 109 to 786 fathoms, 
