MYCTOPHUM LATERNATUM. 267 
adipose dorsal to the caudal. Pectorals short, reaching nearly half way to 
the anal. Scales smooth, those of the lateral line enlarged. The lanterns 
are as figured on Plate LVI., fig. 3; there are no luminous bodies on the 
top of the caudal region. 
Lustrous brownish on the back; bluish on the upper portions of the 
sides, shading to lighter below; light colored about the nasal sacs and on 
the interorbital space. 
Latitude. Longitude, 
27° 50’ N 145° 45’ 30” W. 
Myctophum laternatum sp. n. 
Plate LVI. fig. 1. 
D. 11 (11-12); A. 16 (16-15); V. 8; 
Somewhat stout and short, compressed, depth about one fourth of the 
total length. Head deep, nearly one third of the length from the snout to 
the base of the caudal. Snout very blunt, deep, short, about one fourth 
as long as the eye, profile nearly vertical in front, a median internarial 
ridge. Eye large, one third of the length of the head, one and one half 
times as wide as the interorbital space, four times as long as the snout. 
Mouth wide; maxillary extending little behind the orbit. Opercles broad, 
thin. 
Dorsal origin near midway from snout to base of caudal. Anal origin 
below the hindmost rays of the dorsal. Adipose fin above the posterior half 
of the anal. Ventrals little backward of midway from the bases of the 
pectorals to the origin of the dorsal. Pectorals reaching behind the bases 
of the ventrals. Caudal forked. 
The lanterns are disposed somewhat as follows: one on the middle of 
the interorbital space; three in each branchiostegal series, the anterior 
being particularly distinct below the chin; a small one at the hind end of 
the maxillary, and a larger one above it backward from the lower portion 
of the orbit; one on the lower part of the base of the pectoral, another 
above this at the margin of the opercle, and a third below and forward at 
the opercular edge; five in the series from the isthmus to the base of the 
ventral ; a single one above the base of the ventral half way to the lateral 
line ; four in the series from the ventrals to the anal; three in a series from 
the vent up and backward to the lateral line; behind the vent at the side 
