432 NEW FISHES FBOil PACIFIC OCEAN— GILBERT 4- CRAMEE. vol.xix. 



front of end of first dorsal ; its distance from base of ventrals one-third 

 to one-fourth of length of head. Pectorals in axis of body narrow, 

 slightly more than half length of head. Outer ray of ventrals pro- 

 duced into a filament whicli reaches beyond origin of anal. Vent well 

 forward, immediately behind base of ventrals; no naked pit between 

 bases of ventrals. Distance between vent and isthmus more than half 

 length of lu^ad. 



Color [in ak-ohol). — Cheeks, oi)ercles, and lower two-thirds of sides 

 silvery; the sides, especially on tail, speckled witli minute dark dots. 

 Upper one-third of sides brownish, the line between the brown and the 

 silvery of the sides sharply defined. Snout, lips, lower side of head, 

 branchiostegal membranes, gill cavities, and posterior part of mouth 

 cavity brownish black. A brown band from eye backward and down- 

 ward across cheeks, A fainter band from eye along ui)per edge of 

 cheeks and opercles; a third band seen through the transparent mem- 

 brane covering the infraorbital ring; narrow posterior margin of pre- 

 maxillary velum black; a small black blotch either side of vomer. 

 Ventral side of body from istlnnus to or a little beyond origin of anal 

 bluish black. I'ectoral and ventral fins dusky. Peritoneum bright, 

 silvery, somewhat dotted with black specks. 



Thirty specimens, ~)h to 13i inches long, from stations 3-470, 3471, 

 34:7't, 3475, and 3470; 343, 337, 375, 351, and 298 fathoms, resj^ectively. 



Type.—^o. 47729, U.S.N.M. 



MALACOCEPHALUS L^VIS, Lowe. 



Hitherto recorded only from the Atlantic, and from Andaman Sea 

 (Alcock). 



Ten specimens, the smallest 123 inches, from stations 3470, 3472, 3475, 

 and 3470; 343, 295, 351, and 298 fathoms respectively. 



Family PLEURONECTID.E. 



PELECANICHTHYS, new genus. 



Eyes and color on the left side. ]Moutli symmetrical, of enormous 

 extent, gape about as long as head. Mandibles exteiuling anteriorly 

 far beyond tip of snout, the projecting portion decurved and falciform; 

 the rami very slender and flexible, each rotating inward, so that the 

 teeth of the two rami meet and interlock in the closed mouth, instead 

 of being oi)posed to those of the upper jaw. Mandibular membranes 

 voluminous, forming a veritable gular pouch and permitting wide 

 divarication of the mandibular rami, which can be also closely appos 

 for rheir entire length. The angular forms a slender process, projeJ 

 ing beyond the mandibular articulation and extending behind the pos- 

 terior margin of the opercle. Premaxillary, maxillary, and palato- 

 X)terygoid formed of three very slender bony rods, parallel and closely 

 juxtaposed for the greater part of their length. Branchiostegals 7. 



