288 DEEP SEA FISHES. 



hind border of the orbit, more tluan half as long as the head, very broad 

 toward the end, forming about three fifths of the upper border of the mouth, 

 rounded on the hind margin ; intermaxillary with edge directed out and 

 forward. Teeth small but rather strong, subconical, hooked, uniserial, on 

 premaxillse, maxillte, dentaries, and palatines ; one to three fang-like teeth 

 at each side of the vomer. Syniphyseal angle and that below the angular 

 not very prominent ; angle at the opercular hinge more prominent than 

 that behind the orbit; angles in front of the eyes, or those forward of the 

 nostrils low. Gills four ; lamellaj short, narrow ; rakers five plus sixteen, 

 slender, sharp pointed, longest three fourths as long as the eye ; membranes 

 not united, free from the isthmus ; openings very wide ; pseudobranchite 

 small. Opercles membi-anous and thin toward the margins. 



Dorsal origin distant from the end of the snout one and two thirds times 

 the length of the head, above the middle of the base of the ventral. Anal 

 origin below the hind end of the base of the dorsal. Vent little backward 

 of a vertical from the middle of the dorsal's base. Ventrals moderate, 

 reaching the anal. Pectorals small, low on the side of the body, reaching 

 halfway to the ventrals. Caudal pedicel rather slender ; caudal fin deeply 

 notched. 



Surface and interior linings black. 



The specimen described has a length of seven and one half inches. 



This species is readily separated from B. alri/rons by a smaller eye, a 

 longer snout, a wider and longer maxillary, and by the fins and the scales. 



Bathytroctes inspector sp. n. 



Plate 31, fig. 1. 



Br. r. 7 ; D. 15 ; A. 11 ; V. 8 ; P. 11 ; U 46 (to 48) ; Ltr. 5+1 + 6. 



Moderately compressed in body and head, depth nearly one fifth of the 

 entire length, taper toward the caudal not rapid and not large in amount. 

 Head about one third of the total length, four fifths as wide as deep at the 

 occiput, moderately arched from the snout to the interorbital space, convex 

 on the crown ; skull narrow between the eyes and between the nostrils. 

 Snout short, blunt, half as long as the eye, concave in front of the eye on 



