^°i89o!"'] PROCEEDINGS OF THE NATIONAL MUSEUM. 63 



slender, with about ten rays, not reaching beyond base of veutrals, one- 

 half head. Adipose dorsal slightly behind last anal ray. 



Scales all lost. 



Color: Blackish, iris bright silvery. A conspicuous silvery (phos- 

 phorescent) spot in front of eye above nostril. A glandular white spot 

 above each pectoral. No glandular masses on back or under side of 

 caudal peduncle. Three pairs of spots on gill membranes, visible 

 through the mandible; a series of four on each side following curve of 

 shoulder girdle; two pairs on breast; a pair on base of ventrals more 

 widely separated than those preceding ; four pairs on belly, the lines 

 then div^erging and extending nearly to lateral line, each containing 

 three spots; a pair on sides above base of ventrals, and one above mid- 

 dle of abdomen ; five pairs along base of anal, the series slightly 

 diverging posteriorly and terminating in a sixth pair higher up on 

 sides; five or six pairs along under side of tail and three or four along 

 base of lower caudal lobe. 



Three specimens from station 3072, in 584 fathoms. 



4. Bathytroctes stomias sp. nov. 



Differing from all species described in its very large mouth, the front 

 of eye being over the middle of upper jaw. 



Body slender, the greatest depth at vertical of base of pectorals 5| in 

 length. Depth ot caudal peduncle one-half greatest depth; head 3f in 

 length. 



Premaxillaries expanded anteriorly to form a triangular projection 

 resembling that of Labldesthes, and overlapping the lower jaw. Mouth 

 very large, the maxillary extending far behind the eye, its length nearly 

 equalling the depth of body. If in head. Eye small, 6^ in head ; snout 

 3| ; interorbital width, 5J. 



Teeth in jaws small, close-set, incurved, depressible, none of them en- 

 larged; those in mandible in a wide band, in premaxillaries or maxilla- 

 ries in a narrow band or a single irregular series. Teeth on vomer and 

 palatines larger than those in jaws, in a single series. The palatines 

 form a conspicuous projecting ridge on each side of roof of mouth. 



Top of head with a conspicuous deep lengthwise groove extending 

 from nape forward to snout and half as wide as interorbital space. A 

 large mucous canal, which runs along its rim posteriorly, opens above 

 orbit. Gill rakers long and slender, the longest over two-thirds diam- 

 eter of orbit, 5 + 13 in number. 



Dorsal beginning in advance of vent, the distance of its origin from 

 base of caudal equaling one-third length. The length of its base equals 

 its distance from rudimentary caudal rays, or about one-half head. 

 Origin of anal slightly behind middle of dorsal, the length of its base 2f 

 in head. Ventrals posteriorly inserted, their base twice as far distant 

 from pectorals as from front of anal. Caudal forked, with many rudi- 



