8o BULLETIN OF THE BUREAU OF FISHERIES. 



lower lobe composed of 6 rays and reaching vent, the upper ray inserted immediately below level of 

 pupil. Disk small, situated midway between tip of lower jaw and origin of anal fin Vent midway 

 between disk and anal. Body uniform pale color; abdomen and gill cavity black; tinged with light 

 red in life. 



In character of teeth and gill opening this species resembles C. ectenes; it is readily distinguished 

 from the latter by the shape of the head and snout and the black peritoneum . 



Only the type taken. 



Careproctus cypselurus (Jordan & Gilbert). 



One specimen, i86 mm. long, from station 4797, off the southern coast of Kamchatka; depth 682 

 fathoms. 



Head 23.5 hundredths of total length without caudal; depth 23; exposed portion of eye 4.5; inter- 

 ocular widtn 13; snout 8.5; width of cleft of mouth 14; maxillary 12; width of head 16; depth of head 

 over center of disk 17.5; length of gill slit 7.7; diameter of disk 5, distance from disk to tip of mandible 

 7.5' to front of anal 21; length of caudal 14. Dorsal 59; anal 55; pectoral 33. Vent at posterior edge 

 of disk. Teeth acute, a few with small cusps; arranged in very numerous short oblique rows. 



The genus Prognurus Jordan and Gilbert, based on the present species, is distinguished from 

 Careproctus solely by the cleft caudal fin. But in species discovered by the Albatross in the northwest 

 Pacific in igo6, this condition passes insensibly into the ordinary truncate and rounded form. The 

 group seems not to be tenable, and the name is here withdrawn. 





. ., ,. — ^^^t3K^^i^rTi;5^??Si^^S«W5P3>«>jj*;.^y , , , 



Fig. 25. — Careproctus furcellus. new secies. Type, 



Careproctus furcellus, new species. (Fig. 25.) 



Type 130 mm. long, from station 4781, between Petrel Bank and Agattu Island, Bering Sea; depth 

 482 fathoms. 



Head 27.5 hundredths of length without caudal; depth 27; exposed portion of eye 6.2; interorbital 

 width 14; length of snout 8.5; width of cleft of mouth 14; maxillary 12.5; width of head 17; depth 

 of head over center of disk 20; gill slit 9; disk 6; distance disk to tip of man.dible 8; to front of 

 anal 24. Dorsal 62; anal 57; pectoral 36. 



Body shorter than in C. cypselurus. Head broad and flat between the eyes; snout deep, bluntly 

 rounded, projecting slightly over mouth; mouth broad; maxillary extending to vertical from middle 

 of pupil, 2>^ in head; teeth in short very oblique scries, slender, some with small cusps which give 

 them an arrow-shaped appearance; about 25 series in half of upper jaw; gill opening entirely above 

 base of pectorals, a little larger than eye; eye moderate, pupil oval; nostril in a short tube in front 

 of eye. 



Dorsal beginning above tip of opercular flap; dorsal and anal joined to caudal for 0.4 its length; 

 caudal emarginate, nearly truncate when spread, less forked than in C. cypselurus; lower pectoral lobe 

 little marked, the lower 6 or 7 rays thickest and with exserted tips, but the longest protruding but 

 little beyond the tips of the rays above them. Disk moderate, its anterior edge under pupil. Vent 

 close behind disk. 



