Jordan and Evcrmann. Fishes of North America. 527 



The specimens studied were denuded of scales, but the impressions 

 indicate that there were 51 in the lateral line, 4 above and 4 below. The 

 specimens (No. 43858, U. S. Nat. Mus.) were obtained by the Albatross 

 from station 2402, in 28 36' N. latitude, 85 33' 30" W. longitude, at a 

 depth of 111 fathoms. (Goode & Bean.) (striatus, striate.) 



Argentina striata, GoooE & BEAN, Oceanic Ichthyology, 52, fig. 62, 1895, Gulf Stream 



244. LEUROGLOSSUS, Gilbert. 



Leuroglossus, GILBERT, Proc. U. S. Nat. Mus., 1890, 57, (stilbim}. 



Appearance of Argentina, but the snout shorter, the maxillary reaching 

 front of eye, and the tongue toothless. Ventrals 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 tooth- 

 less. Pyloric crcca 9. Scales unknown, very caducous. One species 

 known. (/Uvpof, smooth; y/wacra, tongue.) 



800. LEUROGLOSSUS STILBIUS, Gilbert. 



Head 3; depth 5$-. D. 10; A. 11. Snout 3f in head; interorbital width 

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

 Body compressed, of moderate depth. 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 pre- 

 opercular margin; front of anal midway between base of caudal and 

 base of ventrals. Scales wholly lacking in the two specimens obtained. 

 Sides of head, body, and abdomen bright 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. Length 3 inches. Coast 

 of California, in deep water. (<mA/3of, shining.) 



Leuroglossus stilbius, GILBERT, Proc. U. S. Nat. Mus., 1890, 57, from Albatross Stations 2997 

 and 2998, in 221 and 40 fathoms. (Type, No. 44283. Coll. Gilbert.) 



Family LXVII. MICROSTOMID^E. 



Closely allied to the Argentinidce, but with the branchiostegals reduced 

 to 3 or 4 ; mouth very small, terminal, with small teeth, chiefly on the 

 lower jaw and vomer. Gill membranes separate or united. Body elon- 

 gate, subterete. Adipose fin present ; dorsal short, posterior ; ventrals 

 behind middle of body. Three genera and about six species known, all 

 from the deep waters of the Atlantic ; reduced Argentinida. 



MICROSTOMIN^; : 

 a. Gill membranes separate ; mouth very small ; body subterete. 



I. Dorsal fin inserted before ventral. NANSENIA, 245. 



BATHYLAGIN^; : 



aa. Gill membranes broadly united across the isthmus ; body compressed ; mouth small ; eye 

 very large ; dorsal opposite ventrals. BATHYLAGUS, 246. 



