140 



BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



CAREPROCTUS OSTENTUM Gilbert 



Careproctus ostentum Gilbert, 1896, p. 444. 



Type.—Fem&\e, No. 48619, U.S.N. M.; Albatross Station 3324, 

 north of Unalaska, Bering Sea; depth 109 fathoms. 



Figure 63.— Careproctus ostentum. Teeth from type 



^Distribution. — Bering Sea; Albatross Stations 3331 and 3324; 

 depth 109-350 fathoms. Three specimens examined, all of small size. 



Relationships. — C. ostentum is 

 distinguished by the minute disk. 

 It closely resembles C. gilberti but 

 has advanced a step farther to- 

 ward the loss of the disk. 



Description of type. — Dorsal 54; 

 anal 47; pectoral 32; caudal S. 

 Depth 4.5 in length without 

 caudal; head 3.8. Eye 3.2 in head; 

 disk minute, more than 9 in the 

 head. 



Body rather heavy at the nape, 

 short, slender posteriorly. Head 

 heavy; interorbital broad, flat; 

 occiput slightly swollen; cheeks 

 vertical. Mouth broad, lateral 

 cleft reaching vertical from pupil : 

 maxillary reaching vertical from 

 posterior margin of eye. Teeth 

 simple, numerous, inner teeth 

 elongate, slender, recurved; the 

 oblique rows difficult to count, 

 about 10 in the half of the lower jaw. Snout low, profile retreating 

 gradually from the mouth; upper teeth partly exposed when the 

 jaws are closed. Nostril in a very short tube. Eye large, promi- 



FiGURE 64.— Careproctus ostentum. 

 from specimen No. 3023, Stanford 

 siTY Zoological Museum 



prickles 

 Univer- 



