%9o'."'] PROCEEDINGS OF THE NATIONAL MUSEUM. 57 



Color : Iris, a streak aloug sides, aud sides of head, silvery. Occi- 

 put and snout dusky ; a black blotch above each eye. Back with eight 

 faint dusky cross-bars. Fins somewhat dusky. Mouth and gill cavity 

 white. Peritoneum black. 



A single specimen 3 inches long, from station 3017, in 58 fathoms. 



Leuroglossus gen. nov. [Argentinidce.) 



Ventrals nearly under middle of dorsal. Mandible with a few weak 

 teeth or none. Premaxillaries toothless. A row of stronger teeth on 

 vomer and front of palatines. Tongue, toothless. Pyloric coeca 9. 



Appearance of Argentina, but the snout shorter, the maxillary reach- 

 ing front of eye, and the tongue toothless. (Type, Leuroglossus stilbius 

 sp. nov.) 



10. Leuroglossus stilbius sp. nov. 



Body compressed, of moderate depth. Head 3 in length; depth 5J. 

 D. 10; A. 11. 



Eye 3^ in head, equaling maxillary, which reaches front of orbit. 

 Snout 35 in head ; interorbital width 4J. Lower jaw projecting. Gill 

 rakers long and numerous. Opercle very thin, membranous. Front 

 of dorsal midway between base of caudal and front of pupil. Ventrals 

 inserted nearly under middle of dorsal, midway between base of caudal 

 and preopercular margin. Front of anal midway between base of cau- 

 dal and base of ventrals. 



The character of the scales can not be determined, as they are wholly 

 lacking in the .two specimens obtained. 



Color : Sides of head, body, and abdomen right silvery ; dorsal region 

 dusted with fine black dots, which become coarser on tail. Snout 

 blue-black. Opercle with steely luster. Upper part of eyeball black. 

 Buccal and gill cavities, and peritoneum jet-black. Fins dusky. 



Two specimens, the largest 3 inches long, from stations 2997 and 

 2998, in 221 and 40 fathoms. 



11. Neoconger vermiformis sp. nov. 



Body slender, the depth 2J in length of head. Head 4:^ in length of 

 body. Snout anteriorly sharp, slightly projecting beyond the mouth. 

 Mouth small, reaching slightly behind orbit, its cleft 3.^ in head. Eye 

 very small, about 9 in head. Posterior nostril immediately in front of 

 middle of eye, the anterior near tip of snout, both without tubes. 



Teeth small, conical, in a single row in jaws and on vomer posteriorly; 

 anteriorly on vomer in two series. Gill slits vertical, longer than eye, 

 the two separated by an interspace nearly equal to their length. Tail 

 usually longer than body by a distance equaling length of caudal rays, 

 the body rarely slightly longer than tail. 



Dorsal beginning in advance of vent by a distance equaling half 

 length of head. Both dorsal and anal are low anteriorly, but evident, 



