ALEPOCEPHALUS ASPERIFRONS. 291 



The sijecimen from which the description is taken had a length of nearly 

 or quite seventeen inches. 



Deep black over the entire surface and on the linings of the body cavity. 



station. Latitude. Longitude. Depth. Tomperaturo. Bottom. 



33(35 5° 31' N. 8G° 31' \V. 1010 I'atliojus 3^7°F. Yl. glob. Oz. 



Alepocephalus asperifrons sp. n. 

 Plate LIX. fig. 1. 



Br. r. 6; D. 16-17; A. 17-19; V. 7 ; P. 11; LI. 56-58; Ltr. 8 + 1 -f 

 16 ca. 



Compressed, depth nearly one fifth of the entire length, caudal region of 

 moderate slenderness. Head about one third of the total length, broad at 

 the back, narrowing toward the throat, broadly curved from the occiput to 

 the end of the snout, with a concave depression or trough from the nape 

 to the internarial region ; crown dish-like on the parietal region, with a 

 short ridge putting forward from the occipital crest. The frontal ridges are 

 continuous and converge to a point above the vomer on the snout, where 

 they turn abruptly outward ; posteriorly they appear to consist of single 

 rows of rough more or le.ss confluent tubercles, giving the edges of the 

 ridges a very rough or serrated profile; these rough crests extend forward 

 between the orbits. Snout moderate, somewhat concave on the sides for- 

 ward of the eyes, wider al)Out the mouth, narrow between the nostrils, as 

 long as the eye, blunt. Mouth wide ; maxilla3 broadening and rounded pos- 

 teriorly, reaching little backward of the middle of the eye, toothless. Teeth 

 small, slender, acicular, in single series, on intermaxillaries, palatines, and 

 dentaries. Gill covers thin and membranous at the margins, extending back 

 on the bases of the pectorals. Gill membranes not united, free from the 

 isthmus. Pseudobranchia? well developed. 



Dorsal origin two lengths of the head from the end of the snout ; dorsal 

 base shorter than its distance from the median caudal rays. Anal origin be- 

 low the third or the fourth ray of the dorsal ; anal base extending backward 

 of the base of the dorsal one or two rays. Vent little behind the first dorsal 

 ray. 



Entire length about twelve inches. 



Surface and internal linings deep black. 



