''"isgo!"'] PROCEEDINGS OF THE NATIONAL MUSEUM. 115 



head and truuk with silvery luster. Suout, inaudible, and gular mem- 

 brane dusky; abdominal area, branchiostegal membranes, base of 

 ventrals, axillary blotch, and front of anal purplish-black. Posterior 

 edge of gill membranes and opercular flap white. Dorsals dusky, with 

 an inconspicuous darker margin, which becomes more marked poste- 

 riorly. Anal darker, margined with black. Caudal blackish. Pectorals 

 and filamentous portion of ventrals white. Inside of mouth and gill 

 cavity white. Peritoneum silvery, rendered black on sides by clusters 

 of spots. 



Many specimens, the largest 7 inches long, from Stations 2997, 3011, 

 3015 and 301G, in 71 to 221 fathoms. 



81. Macrurus (Coelorhynchus) scaphopsis sp. uov. 



Depth 6f in total length; head 41. Lat. 1. ca. 98. D. II, 8 ; A. ca. 95. 



Snout flattened, acute, the conspicuous infraorbital ridge forming a 

 strong ridge along its sides, the two meeting at tip in a salient point. 

 An evident keel extends from tip of snout to middle of interorbital 

 area. The supraorbital ridge divides anteriorly, one branch running 

 down in front of nostril, the other separating nostril fossa from orbit. 

 Between the ridges the head is covered with a soft, yielding integu- 

 ment, which is semi-translucent. 



Lower side of snout wholly naked below% and with a large naked 

 area above on each side of tip. The snout projects beyond the mouth 

 for a distance equaling length of maxillary. 



Mouth of moderate size, the maxillary reaching vertical from posterior 

 margin of pupil, 3^ in head. Teeth villiform, in a broad baud in upper 

 jaw, in a narrower band below, not reduced to a single series laterally 

 in either jaw, and none of the teeth enlarged. 



Eyes large, elliptical, equaling length of snout, 3;| in head ; inter- 

 orbital width 4:^. Barbel short, about half pupil. Preopercular angle 

 greatly produced backwards, wholly concealing the interopercle, the 

 strong infraorbital ridge failing to reach preopercular margin by only 

 one third diameter of pupil. Structure of gills as usual in this genus, 

 the gill rakers obsolete. Gill membranes broadly united, joined to 

 isthmus, across which they form posteriorly a very narrow free fold. 



Besides the ridges already described on head, there are a pair on oc- 

 ciput, a pair from upper posterior margin of orbit to upper angle of 

 gill opening, and a median rnlge on nape reaching about half way 

 from occiput to dorsal. These ridges, as well as the interorbital space 

 and the area between the occipital ridges, are covered with scales com- 

 pressed to a knife-like edge, which is provided with a single series 

 of backward-directed spines. The scales on infraorbital and rostral 

 ridges bear stellate spines or are similar to those on temporal region, 

 sides of head, qnd body generally. 



Scales on body large; three longitudinal series between lateral line 

 and middle of first dorsal. Each scale is provided with a ridge bear- 



