ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 471 



LYCONEMA gen. nov. (LYCODID^.) 



Generic characters as in Ly codes, but the lower jaw covered with a dense mass of 

 slender filaments or barbels, between which can be seen the mucous pores of the 

 mandible. In Ihtocates the mandible is provided with a series of hollow tubes, which 

 are doubtless the produced margins of the pores. 



Type, Lyconema barhatum sp. nov. 



75. Lyconema barbatum sp. nov. (Plate 35.) 



A deuse fringe of filaments covers the entire under surface of lower jaw, extending 

 to behind angle of mouth. A series of filaments is found also laterally on the throat, 

 and a few scattering ones are sometimes present on the branchiostegal membranes. 

 Upper jaw without barbels. Body slender, the depth llii^ in the length; head 6^ in 

 length. Upper jaw overlapping the lower. Month small, the maxillary reaching 

 vertical from front of pupil, 3 in head. Teeth all conical, none of them much 

 enlarged. Those in lower jaw in a patch or irregular double series, narrowing to a 

 single series laterally. In upper jaw there is a single series, the teeth of which 

 increase in size toward the middle line, the middle teeth being almost canine-like. 

 Behind the latter is found a short inner series of small teeth directed backward. 

 Teeth on vomer and palatines in single series. 



Gill-slits continued forward to slightly beyond bases of ventrals and to the level 

 of lower edge of base of pectorals. Width between gill-slits one-half diameter of 

 eye. Pseudol>ranchi;p well developed. Eye 3i in head. Snout 4i. Posterior line 

 of occiput midway between origin of dorsal and front of pupil or front of eye. 

 Origin of anal fin at end of first third of length of body. 



Ventrals very short, one-half to two-fifths diameter of orbit. Pectorals broad, 

 with the posterior edge emarginate, some of the upper and the lower rays longer 

 than the intermediate ones. Length of fin 1;% in head. 



Dorsal 103; anal 91; each counted to middle of caudal; pectoral 15. 



Scales showing traces of definite arrangement in series, widely separated anteriorly, 

 becoming crowded toward end of tail. They are continued up on the vertical fins, but 

 are absent on head, on anterior half of nape, and on the pectoral fins. The lateral 

 line is very faintly shown, and only for a short distance behind head, where its 

 course is obliquely downward. The usual series of mucous pores present, but not 

 conspicuous. 



In spirits this species has an olive-brown ground color, becoming white on under 

 side of head and on abdomen. A series of eight or nine brown spots half as large as 

 eye along middle of sides, those posteriorly continued downward onto the base of 

 the anal, the last two or three reaching the edge of the fin and there developing into 

 intense black blotches. A similar series of smaller spots corresponding in position 

 to those just described occurs along the base of dorsal. They are also continued as 

 faint bars on the fin, at the margin of which they each develop a black blotch, those 

 posteriorly wider and more intense. An intermediate series of spots alternates with 

 the two just described. An elliptical jet-black spot occupies the greater part of 

 caudal fin and is narrowly margined all around with white. The peritoneum is 

 jet-black, the mouth and gill-cavities white. 



Twelve specimens, the longest 150 mm., from station 3129 (lat., N. 36° 39' 40" ; long., 

 W. 122° 01' ; depth 204 fathoms). 



76. Maynea brunnea Bean. 



Station 3188; depth 316 fathoms. The teeth on the palatines are in a single series 

 instead of a wide band, as stated in the original description. 



77. Lycodapus fierasfer Gilbert. Station 3202; depth 382 fathoms. 



78. Lycodapus dermatinus sp. nov. (Plate 35.) 



Very similar to L. fieranfer, but the head, body, and fins covered with a thick, loose 

 skin which contains numerous pores or openings for the mucous canals. One series 

 of these runs along the middle of sides and forms the lateral line; it rises anteriorly 



