370 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.42. 



vent. Disk small, deeply cupped and probably f unctionless, separated 

 from vent by a distance slightly exceedmg its own diameter. (Fig. 11.) 



Skin translucent, the anterior parts rosy in life; abdomen and peri- 

 toneum black; posterior margin of dorsal and anal and the caudal 

 dusky. 



Two cotypes from the type-locality, and two other cotypes from 

 station 5018, off Cape Tonin, east coast of Sagalin, 100 fathoms. 



19. CAREPROCTUS COLLETTI Gilbert. 



Plate 46, fig. 1. 



Careproctus colletti Gilbert, Rept. Coram. Fish and Fisheries for 1893 (1896), 

 p. 442. 



Known hitherto only from small specimens (the type 85 mm. long) 

 taken south of the Alaska Peninsula, at a depth of 625 fathoms. 

 Through the present collection, its range is extended to the southern 

 Oldiotsk and the northern part of the Sea of Japan, and much larger 



specimens were obtained, the largest 

 A\\\\| reaching a length of 298 mm. The 



"^ VJ^ following description is based on the 



^^^^^K ^'^^x ^^^ material. 



r -^iV H Measurements in hundredths of 



,:^:Xi..' . fj length without caudal: Length of 



— ^—-±1j:Ms-''^" (;,i_i->^ head 23; width of head 14.5; inter- 



f/1 \t\ ocular width 1 1 ; width at angles of 



^ //' ^1 mouth 12.3; distance from tip of snout 



Fig. 12.-RELATIVE SIZE AND POSITION OF to front of orbit 8.8; diameter of eye 



VENT AND DISK OF cakepeoctits COL- 5. (jistancc from til) of suout to end of 



LETTI 



maxillary 13 ; length of giU slit 3 ; depth 

 of body 28 ; distance from tip of snout to front of disk 1 5 ; to anus 21.5; 

 to front of anal 36 ; to front of dorsal 28 ; diameter of disk 4.6 ; distance 

 from disk to anus 2.3; longest pectoral ray of upper lobe 15; of lower 

 lobe 26; of shortest ray in notch 5.2. 



Dorsal 55; anal 49; pectoral 28; caudal 10; pyloric c^ca 13. 



The species is apparently always smooth, as two adult males and 

 two adult females are alike without any trace of simple or multifid 

 prickles ; form compressed, of medium depth, the top of head gently 

 convex transversel}'', a trifle flattened above front of orbit; cheeks 

 sub vertical; snout very deep, bluntly rounded, a little protruding 

 beyond premaxillaries ; mouth broadly curved, with short lateral 

 cleft, the tip of maxillary below middle of eye; teeth lanceolate, 

 without cusps, in adults in very numerous oblique series, 20 to 26 in 

 half of each jaw. Adistinct short nostril tube, inserted slightly below 

 level of upper rim of orbit. Gill slit short, wholly above pectoral base. 



Disk small, distinctly cupped, its center under middle of cheek 

 behind eye, its distance from vent from a half to three fourths its 

 own diameter. (Fig. 12.) 



