372 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 42. 



dorsal and anal joining caudal \\dthoiit notch. Pectoral notched, 

 the lower lobe consisting of six short thickened rays with free tips, 

 which reach slightly past the vent. Disk well developed, its anterior 

 edge a short distance behind the eye. Vent immediately behind 

 disk. (Fig. 13.) 



Color pale, sldn transparent, probably pinldsh in life. 



Only the type known. 



21. CAREPROCTUS PYCNOSOMA, new species. 



Plate 46, fig. 3. 



Type.— Cat. No. 73340, U.S.N.M. Forty-six mm. long, from sta- 

 tion 4803, off Simushir Island, Japan; depth 229 fathoms. 



Measurements in hundredths of length without caudal fui (41 mm.) : 

 Length of head 28; gi'eatest width of head 18; interocular width 10; 

 width at angles of mouth 12; distance from tip of snout to front of 

 orbit 9.5; diameter of eye 7.5; diameter of pupil 3; distance from 

 tip of snout to end of maxillary 10; length of gill slit 4.5; greatest 



depth of body 19; distance from tip of 

 snout to front of disk 15.5; to anus 

 31; to front of anal fin 41; to front of 

 dorsal 3 1 ; diameter of disk 8 ; dis- 

 "^^ '^^ /{ ' tance from disk to anus 7; longest 



pectoral ray of upper lobe 17; of lower 

 lobe 10; of shortest ray in notch 9. 



FIG. 14.-RELAXIVE SIZE AND POSITION OF ^^rsal 42 ; anal 37 ; pectoral 37. 

 VENT AND DISK OF cakeproctus pyc- Body sliort, Tatlicr slender, com- 

 ^'^^°^^- pressed; head thick and blunt, nearly 



as wide as deep; sides of head vertical; occiput not swollen. Snout 

 blunt, broad, not high, and not protruding beyond premaxillaries; 

 nostril tube short but well developed, its posterior margin raised 

 into a flap; its insertion high, on level with upper rim of orbit. 

 Mouth broad, maxillar}'' reaching vertical from slightly behind ante- 

 rior margin of eye. Teeth strongly trilobed, in broad bands. Gill 

 opening short, wholly above pectoral. 



Anterior dorsal rays not shortened, their tips free, not hidden 

 beneath the skin. Caudal broad, truncate, of about 10 rays, joined 

 to anal for one-third its length; no dorsal or anal notch. Pectoral 

 very little notched, the lower lobe of 7 rays and very short. Disk 

 moderate, not deeply cupped, the anterior edge under posterior 

 margin of pupil. Vent separated from disk by two-thirds diameter 

 of disk. (Fig. 14.) 



Color dusky, lighter about head and snout. 



Apparently related to C. ectenes, but distinguished by shape of 

 snout and length of body and the number of fin rays. 



Only the type taken. 



