138 BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



Distribution. — Japan Sea, and Gulf of Tartary, Albatross Stations 

 4814, 4981, 4982, 4983, 4992, and 4997; depth 318 to 429 fathoms. 

 Thirteen specimens examined, reaching a length of 263 mm. 



RelationsTiips. — C. trachysoma appears to be closely allied to C. 

 acantJiodes and C. rastrinus; distinguished from C. acanthodes by the 

 dotted peritoneum, smxaller disk, narrower head, more fin rays, and 

 the longer lower pectoral lobe; from C. rastrinus by the larger eye, 

 the dotted peritoneum, the depth and shape of the body, and the 

 smaller number of pectoral rays; from C. melanurus in the larger 

 gill slit, coloration, and the presence of prickles. (See description of 

 C. pellucidus.) 



Synopsis. — Dorsal 58-60; anal 53-55; pectoral 31-32; caudal 7-8; 

 pyloric coeca 20. Depth of body 3.5-4.1 in length without caudal; 

 head 3.7-4.6; tip of mandible to disk 8.5-11. Eye 3.8-4.2 in head; 

 disk 7.5-8.3 in large specimens, 5.8 in young; lower lobe of the pectoral 



Figure 60.— Caeeproctus trachysoma. Teeth from cotype 



fin 0.9 in adults, 1.3 in young. Body moderately deep, more elongate 

 than in C. rastrinus. Teeth simple. Eye moderate, the lower half 

 silvery or black. Gill slit normally extending down in front of from 

 one to five pectoral rays. Cactuslike prickles present. Lower 

 pectoral lobe elongate, reaching nearly to the anal fin, about equal to 

 the head. Disk small, slightly cupped ; the margin in front and behind 

 folded over. Body dusky gray, bluish black posteriori; lips dusky; 

 peritoneum silvery, dotted; stomach blacldsh. 



CAREPROCTUS GILBERTI Burke 



Careprodus spectrum Bean, 1890, p. 40 (part, confused with type of C. spec- 

 trum. — EvERMANN and GoLDSBOROUGH, 1907, p. 333 (part, not of Gilbert.) — 

 Gilbert and Burke. 1912a, p. 76. 



Careprodus gilberti Burke, 1912a, p. 568. 



Type.— 'No. 64110, U.S.N.M.; north of Kodiak Island, Alaska, 

 Albatross Station 4292; depth 102 fathoms. 



