454 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
Family LYCODIDA. 
125. Lycodopsis crotalinus Gilbert. (Plate 32.) 
One specimen from station 3210, south of Sannak Islands; depth, 483 fathoms, 
Colors in life: Head and body light brown, the lower parts darker; snout, sub- 
orbital region, and a band across pectorals greenish gilt; no light bar on head. 
Depth 123 in length; head 54; maxillary 2} in head; eye 7, equal to interorbital 
width; width of bone between orbits 17 in head; snout 34 in head; teeth above in 
a narrow band, reaching only about half way of gape. In the mandible teeth are 
absent on posterior two-fifths of gape. The gill-slit extends a little farther forward 
below than above. Ventrals as long as pupil. Longest pectoral ray 2? in head. 
Head wholly sealed behind eyes. Lateral line not evident. 
The stomach contained remains of crustacea. 
126. Lycodes diapterus Gilbert. 
Taken abundantly north of Unalaska at stations 3227, 3324, 3326, 3329, 3330, 3331, 
and 3332; depths 109 to 576 fathoms. 
127. Lycodes brevipes Bean. 
Numerous specimens from stations 3216, 3225, 3226, 3227, 3263, 3309, 3310, 3311, 
3313, and 3330, located north and south of the Aleutian Islands and in Bristol Bay; 
depths 58 to 351 fathoms. 
128. Lycodes palearis sp. nov. 
Very close to L. brevipes Bean, differing constantly in the longer ventrals, the 
greater development of mandibular and labial folds, the more numerous white bars, 
and the smaller eye. Head naked. Nape more or less naked, the scaleless area 
variable in extent, sometimes confined to its anterior third, sometimes reaching 
nearly to front of dorsal. Body sparsely covered with imbedded scales; axil naked. 
Lateral line short, decurved, extending scarcely beyond middle of pectorals. Teeth 
present in jaws, vomer, and palatines, those on premaxillaries laterally in a single 
series which widens anteriorly into a rather broad patch, the outer teeth some- 
what enlarged, especially in front. All the premaxillary teeth shut outside the 
mandibular series,which are opposed to those on vomer and palatines. Mandibular 
teeth arranged similarly to those in upper jaw, the lateral series somewhat enlarged, 
continuous with the inner edge of the symphyseal patch. Vomerine teeth bluntly 
conic, 3 or 4 in number; palatines in a single series. 
Snout long, prominent, the upper jaw projecting beyond the lower for a distance 
equaling two-thirds diameter of orbit. Upper lip thin, much expanded laterally, 
continuous posteriorly with the lower lip, which forms a wide, free membranous lobe 
opposite middle of each mandible. Anteriorly the lower lip becomes abruptly con- 
tracted and adnate to the jaw, leaving the symphyseal portion without free margin. 
Inner edges of mandibles with wide membranous borders, which increase in width 
anteriorly, where they terminate in a pair of acutely pointed free flaps. These free 
flaps and membranous margins are very conspicuous in both young and old speci- 
mens. In L. brevipes they are very inconspicuous, becoming evident in adults only. 
Dorsal with about 105 rays, counted to middle of caudal; anal about 90; pectoral 
18. Head 5} in length; depth 94 to 11 in length, 2; in head. Eye 5 to 6 in head, 
1ito2in snout. Ventrals 14 to 14 in eye, twice as long as in L. brevipes. Pectorals 
1tin head. Anal origin under eighteenth dorsal ray. 
General color brownish olive, growing lighter on the lower parts. Dorsal with 14 
to 16 white vertical bars, extending in young specimens across back and sides and 
onto anal fin; in adults confined to the fins and frequently indistinct or wanting. 
Anterior dorsal angle frequently black, separated from remainder of fin by a curved 
white bar. Dorsal and anal not black-margined as in L. brevipes. In the latter the 
white lateral bars are 9 to 12 in number and are usually confined to upper half of 
body. There is also no black spot on anterior dorsal rays. 
