collected during the Voyage of the ^Challenger.'' 183 



diameter of tlie eye. Eye large, its horizontal diameter being 

 two ninths of the length of the head and two thirds of that of 

 the snout. Teeth in the jaws en cardes, those on the vomer 

 and palatine bones in a single series, the vomerine series 

 being interrupted in the middle. The intermaxillary is toothed 

 along the whole of its length, and extends nearly as far back 

 as the maxillary, the extremity of which reaches to behind the 

 eye. Pectoral considerably longer than the ventral, which 

 does not extend to the vent, the vent being a little nearer to 

 the anal than to the ventral. Origin of the dorsal fin imme- 

 diately behind the root of the ventral. Scales ctenoid ; those 

 of the lateral line and between the ventral fins larger 

 than the rest. Uniform brownish black; fins of a lighter 

 colour. 



Off the eastern coast of New Zealand; off Juan Fer- 

 nandez; middle of South Atlantic: 1100, 1375, and 1425 

 fathoms. 



Bathypterois, g. n. Scopelid. 



Shape of the body like that of an Aidopus. Head of mode- 

 rate size, depressed in front, with the snout projecting, the 

 large mandible very prominent beyond the upper jaw. Cleft 

 ofthe mouth wide; maxillary much developed, very movable, 

 much dilated behind. Teeth in naiTOw villiform bands in the 

 jaws ; on each side of the broad vomer a small patch of simi- 

 lar teeth ; none on the palatines or on the tongue. Eye very 

 small. Scales cycloid, adherent, of moderate size. Rays of 

 the jDectoral fin much elongate, some of the upper being sepa- 

 rate from the rest and forming a distinct division. Ventrals 

 abdominal, with the outer rays prolonged, eight-rayed. Dorsal 

 fin inserted in the middle of the body above, or immediately 

 behind the root of the ventral, of moderate length. Adi]30se 

 fin present or absent. Anal short. Caudal forked. Gill- 

 openings very wide ; gill-lamina3 well-developed, sepa- 

 rate from each other ; gill-rakers long. Pseudo-branchise 

 none. 



Bathypterois longifilis. 



B. 12. D. 13. A. 9. P. 3/13. V. 8. L. lat. 61. 

 L. trans V. 6/10. 



The uppermost pectoral ray is the strongest, longer than the 

 whole fish, bifid towards its extremity. Outer ventral rays 

 with dilated extremities. Dorsal fin inserted immediately 

 behind the root of the ventrals. An adipose fin. 



Near Kermadec Island, 520 and 630 fathoms. 



