454 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Family LYCODIDiE. 



125. Lycodopsis crotalinus Gilbert. (Plato 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 12| in length ; hoad5|; maxillary 2! in head; eye 7, equal to interorbital 

 width; width of l)one between orbits 17 in liea<l; snout 3^ in liead; teetii above in 

 a narrow baud, 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 2f in head. 

 Head wholly scaled 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 Avidens 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, ?> or 4 in number; palatines in a single series. 



Snout long, prominent, the iipper 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 9| to 11 in length, 21'; in head. Eye 5 to 6 in head, 

 1^ to 2 in snout. Ventrals Ik to H '» eye, twice as long as in /.. brevipes. Pectorals 

 IJ in head. Anal origin under eighteenth dorsal ray. 



Gen(iral color brownish olive, growing lighter on the lower parts. Dorsal with 14 

 to 16 white vertical bars, extending in young S])ecimen8 across b.ack and sides and 

 onto anal fin; in adults confined to the fins and frequently indistinct or wanting. 

 Anterior dorsal angle frequently black, separate<l from remainder of (in 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. 



