PROCEEDINGS OF THE NATIONAL MUSEUM. 425 



Interorbital space a little convex, about 1.^ to 1^ in orbit. Orbit sub- 

 circular, 3 to 3^ in Lead. Mouth small, transverse, with but little 

 lateral cleft, the maxillary reaching nearly to middle of pupil, about 3 

 in head. Teeth in both jaws in villiform bands, the outer preniaxillary 

 series somewhat longer than those behind, but only indistinctly differ- 

 entiated from them. Vertical edge of preopercle not serrulate. Earbel 

 moderate, 1^ in orbit. Gill membranes broadly united, almost without 

 free fold behind. Anterior gill slit very short, about one-half diameter 

 of orbit. Width of body about one-half its depth. The dorsal protil"s 

 rises gently' from tip of snout to origin of first dorsal, descending 

 abruptly under this fin, thence nearly straight to end of tail. Vential 

 outline slightly convex. Scales rather small, quite deciduous, those on 

 upper part of side near dorsal fin with about 25 moderate spinelets 

 arranged in 7 to S parallel rows. Fourteen scales in a transverse row 

 between lateral line and origin of first dorsal. The interorbital space, 

 upper side of snout, under sides of rami of lower jaw, infraorbital ring, 

 cheeks, and opercles completely scaled. Second dorsal spine serrate, 

 moderately prolonged in a filament, the length of which can not be 

 given owing to mutilation; base of first dorsal equal to orbit, distance 

 between dorsals three-fourths base of first dorsal. Pectorals near axis 

 of body If in head, somewhat mutilated. Outer ventral ray prolonged 

 into a filament, about as long as head. Distance from tip of snout to 

 origin of anal about -f in total. Vent about halfway between base of 

 ventrals and origin of anal. 



Color {hi alcohol). — Brownish; inside of mouth and gill cavities, 

 branchiostegal membranes, and belly black; ventral fin and distal part 

 of first dorsal fin dusky; ventral filament and the other fins pale. 

 Peritoneum silv^ery, washed with dark brown. 



This species differs from M. Itolocentrns in its more numerous ventral 

 rays, smaller scales with fewer and more regularly arranged spinelets, 

 in its dorsal profile, longer barbel, etc. 



Two si)ecimens, 6 and 7i inches long, from stations 3473 and 3475; 

 313 and 351 fathoms respectively. 



Type.—^o. 47741, U.S.N.M. 



MACROURUS HOLOCENTRUS, new species. 

 (Plate XLIII.) 



Head about 4|; depth about 0; B. 7. First dorsal 1, 11 or 1, 12; sec- 

 ond dorsal low; anal rays well developed; pectorals 20 to 21. 



Head quite firm, compressed. Snout very nearly equal to orbit, pro- 

 jecting axially beyond mouth for about half that distance, its lower 

 profile very oblique; in shape obtusely conical, with a median and two 

 smaller lateral spinous tubercles in front, the median tubercle nearly 

 on a level with upper margin of orbit. Interorbital space nearly fiat, 

 narrow, 1^ in orbit. Mouth small with lateral cleft. Premaxillaries 

 anteriorly below level of pupil. Maxillary reaching not quite to center 



