JORDAN AND THOMPSON: FISHES OBTAINED IN JAPAN IN 1911. 209 
Family GONORHYNCHID. 
16. Gonorhynchus abbreviatus Temminck «& Schlegel. 
Misaki, No. 6033a, the third specimen known. 240 mm. in length; identical 
with the one described by Jordan & Herre. 
Compared with Gonorhynchus gonorhynchus from Port Jackson, Australia, 
the eye is larger, the head longer, the depth greater, the pectoral longer, and there 
is one ray less in dorsal and anal. Head 4.25 in body; depth 7.5; D. 11; A. 8. 
Eye 4 in head, snout 2.5; interorbital 4; pectoral 5 in body. Scales 162-42. In 
G. gonorhynchus, the head is 4.66 in length, the depth 8.66. D. 12; A. 9. Seales 
161-48. 
Family ALEPOCEPHALID. 
17. Alepocephalus umbriceps sp. nov. (Plate XXIV, fig. 1.) 
A single specimen from Aomori. 270mm. in total length. Type No. 6030a, 
Catalog of Fishes, Carnegie Museum. 
Head 2.75 to base of caudal; depth at pectorals 5.33; eye equal to snout, 
4 in head; maxillary 2.66; D. 17; A. 17; P. 11; branchiostegals 7; 65 pores in lateral 
line. 
Head very large, nearly as deep as body, which is deepest at pectorals; 
bony interorbital space, 6.5 in head; postorbital length of head equal to half its 
whole length; maxillary ending under center of eye; jaws equal; teeth in single 
series on premaxillaries, of small size, not canine-like; a row of very delicate and 
minute teeth on lower edge of maxilla, not visible to naked eye as teeth; close-set 
cardiform series in lower jaw of same size as those on premaxillaries; palatines ridge- 
like, set on edge with narrow band of similar teeth; gill-rakers 7+19, longest one- 
third diameter of eye. 
Dorsal inserted over anus, which is midway between edge of opercle and 
base of middle caudal ray, and its base 2.5 in head; caudal forked, central rays half 
length of longest, tenth or eleventh ray longest, counting rudimentary rays from 
either edge; each edge continued on caudal peduncle by a thin fold of skin half-way 
to last dorsal and anal rays; anal inserted under third or fourth dorsal ray, and termi- 
nating a quarter of the length of the eye behind last dorsal ray; both anal and dorsal 
on fleshy bases; ventral inserted nearly midway between pectoral and anal insertion, 
its length slightly greater than diameter of eye; pectoral small, 2.8 in head. 
Seales imbricate, deciduous, bases narrower than tips, sides straight; con- 
centric lamellz distinctly visible to naked eye; scales present on bases of vertical 
fins; head entirely scaleless, covered with loose skin. 
Color of head dense black, each scale of body tipped with black; all fins 
black; mouth-cavity and peritoneum black. 
