Indian Deep-sea Trawling. 521 
TELEOSTEI. 
PHYSOSTOMI. 
Family Sternoptychide. 
Puoricutuys, Hutton. 
Photichthys Hemingt, sp. n. 
Bee Dt eA Gl eRe Lie Veo: 
Body black, covered with large deciduous scales. ‘The 
length of the head is about one-seventh the length of the 
body without the caudal, and a little greater than the height 
of the body. The eyes are situated very near the anterior 
profile, about a diameter apart from one another, and are 
one-sixth the length of the head. There is a double row of 
small needle-like teeth in the upper jaw, and a single row of 
similar but smaller teeth in the mandible. A few small teeth 
in the palatines and vomer, but the latter has no fang. The 
surfaces of the mesopterygoids minutely denticulate. Gill- 
openings very wide. Four gills with short Jamine and long 
setose gill-rakers on the first three arches. ‘The dorsal fin is 
situated above the space between the ventral and anal fins. 
The latter is extremely long and terminates about an eye- 
length from the caudal. ‘The pectoral and ventral fins are 
nearly in the same plane, and the latter are almost midway 
between the former and the beginning of the anal fin. On 
the two specimens, one of which is very much damaged and 
the other by no means perfect, no adipose dorsal fin can be 
made out. The back is scaly and is not rugose. The 
luminous organs, which show up a dull opaque white against 
the dark background, may be grouped as follows :— 
(1) One between the bases of all the branchiostegal rays. 
(2) Sixteen between the symphysis of the jaw and the 
ectoral fins. 
(3) Kight between the pectoral and the ventral fins. 
(4) Five between the ventral and the anal fins. 
(5) Thirty-five or thirty-six distributed along the bases ot 
the anal rays. ‘he last four groups may be taken as forming 
the lowest lateral row. 
(6) and (7) A second and a third lateral row join about 
the ventral fins, and run as a single row of spots to near the 
caudal fin. 
(8) A fourth row, not so distinct as the others, runs from 
behind the head to near the termination of the anal fin, 
