110 BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



Distribution. — Off Simushir Island, Japan; Albatross Station 4803; 

 depth 229 fathoms. Two specimens examined. 



Relationships. — C. curilanus closely resembles C. edenes in the 

 depressed head, projecting snout, and distinct type of dentition. 

 C. curilanus appears to differ from C edenes in the shorter body, 

 larger disk and larger gill slit. In addition, C edenes appears to be 

 distinct in having the dorsal notch more or less developed, the pyloric 

 coeca absent, a smaller number of pectoral rays, and the vent farther 

 from the disk. The two species appears to be separated geographi- 

 cally, but there is no evident barrier between. The differences we 

 have enumerated may fall within the range of individual variation 

 and the two species be found to be identical though at present the 

 evidence we have indicates that they are distinct. 



Synopsis. — Dorsal 49; anal 43; pectoral 33-34; pyloric coeca 6. 

 Depth of body 6.7-6.8 in length without caudal. Disk 2.7-2.8 in 

 head. Teeth strongly trilobed. Snout depressed and distinctly 

 projecting. Gill slit extending down in front of from one to three 

 pectoral rays. Dorsal fin unnotched; the anterior rays projecting, 

 about equal in length. Vent close to the disk. Color grayish. 

 Reaching a length of 74 mm. 



CAREPROCTUS ECTENES Gilbert 



Careprodus edenes Gilbert, 1896 p. 442. 



Careprodus (Allurus) edenes Jordan and Evermann, 1898, p. 2136. 



Type.—^o. 48618, U.S.N.M.; Bering Sea, Albatross Station 3331; 

 depth 350 fathoms. Length 70 mm. 



Distribution. — Bering Sea, Albatross Stations 3331 and 3785; 

 depth 270 to 350 fathoms. Five specimens examined. 



Relationships. — C. edenes closely resembles C. curilanus. A 

 discussion of the similarities and differences between these two species 

 is given in the discription of C curilanus. In the presence of the 

 dorsal notch and the trilobed dentition C. ectenes resembles the most 

 primitive members of the genus. In the reduction of the pyloric 

 coeca, the distinct dentition, the depressed head, and projecting 

 snout the species has diverged widely from the primitive type. If 

 the coeca were always absent the species would be sufficiently distinct 

 to place in a separate genus. 



Description oj type. — Body slender, elongate, firm, depressed; 

 depth 7.7 in length; width through base of pectoral greater than 

 depth. Head slender, depressed, 4.6 in the length, wider than deep; 

 occiput not swollen; profile low, gradual. Mouth small, with little 

 lateral cleft under the projecting snout; maxillary nearly reaching 

 vertical from middle of pupil. Teeth as in C. curilanus, stout, in 

 broad bands, distinct in that the margin of the lobes are flangelike, 

 arranged in oblique rows; the inward diverging rows prominent, eas- 



