No.liu. PROCEEDINGS OF THE NATIONAL MUSEVM. 423 



nearly midway of this lateral ridge, in front of nostrils. Interorbital 

 space Hat between the two slightly raised orbital rims, about equal to 

 vertical diameter of orbit. Orbit large, the longitudinal much greater 

 than the vertical diameter, the former 3;\ to 3| in head. 



Mouth small, wholly inferior, the distance from tip of snout to pre- 

 maxillaries contained 2J times in length of head; the middle of cleft of 

 mouth slightly behind middle of head, the maxillary reaching about to 

 the middle of eye; its length one-third of snout and eye. The teeth in 

 villiform bands in both jaws, none of them enlarged. Angle of pre- 

 opercle a little prolonged into a lobe, the posterior margin directed 

 upward and forward. Barbel minute, about 5 in orbit. Gill mem- 

 branes broadly united, with a moderate free fold behind. 



Body compressed, its width only about one-half its depth. Base of 

 first dorsal oblique, its origin well elevated above general i^rofile. 

 Scales with 15 to 20 spinelets in about 4 to 6 parallel series. Scale 

 from interorbital base with about 40 spinelets in about 9 radiating 

 series. About 7 scales in a transverse series between lateral line 

 and origin of first dorsal. Interorbital space, upper side of snout, and 

 infraorbital ring scaly ; entire lower side of head, including under side 

 of snout and suborbital region, naked. Second dorsal spine a little 

 curved, sharply serrate, prolonged into a filament, 1% in head. Base of 

 first dorsal less than interorbital space; distance between dorsals less 

 than twice the base of the first dorsal. Pectorals near axis of body, 

 slender, 2 to 2.'j in head. Inner ventral rays reaching about to origin of 

 anal, the outer ray prolonged into a filament nearly twice as long as the 

 inner rays. No naked pit between bases of ventrals. Distance from 

 vent to isthmus, 2i in length of head. Distance from vent to origin of 

 anal but half its distance from base of ventrals. 



Color {in alcohol). — Light brownish; snout and anterior part of 

 head translucent whitish. Inside of mouth, gill cavities, and abdomen 

 blackish. Fins dusky. Peritoneum brownish black dorsally, silvery 

 ventrally. 



Twenty-one specimens, 4A to 7^ inches long, from stations 3470, 3471, 

 3473, 3474, 3475, and 347g'; 343, 337, 313, 375, 351, and 208 fathoms, 

 respectively. 



Type.—^o. 47721, U.S.KM. 



The new genus Coplocephalits differs from C oplorJiy noli us on] j in having 

 the second dorsal spine serrate. It is of doubtful value, especially in 

 view of the rudimentary serrie present on the second dorsal spine of 

 ColccrhyncJi hs (jladiiis. 



MACROURUS ECTENES, new species. 



(Plate XLIV, liy. 1.) 

 Related to .1/, rudis. 



Head 7^; depth about 9i. First dorsal I, 10; second dorsal low; 



pectorals about 22; ventrals 9, 



Head compressed, deep, its sides vertical. Snout short. If in orbit, 



