260 DEEP SEA FISHES. 
obliquely transverse ridges near the hinder edge of each facet, the outer of 
which turns forward near the median ridge along which it slightly diverges 
as it proceeds. Vent halfway from the snout to the anal fin. Scales 
rather large, covering the body and the head from the nape to the luminous 
organs and the mouth, apparently roughened over their surfaces by minute 
spines or tubercles. 
Dorsal origin backward of the vent about one width of the ventral bases, 
a little within the anterior third of the distance from the snout to the end of 
the caudal. Ventrals inserted about midway from the dorsal to the head, 
reaching a vertical from the first ray of the dorsal or little farther. Origin 
of the anal halfway from the luminous organs of the head to the end of the 
tail. Pectorals reaching to the middle of the ventrals. 
Largest individual six and one half inches in length. 
Blackish, with slight reddish tinge; fins blackish to light brownish or 
whitish on different individuals; cheek between the light disks (eyes) and 
the upper jaw steely blue or with a metallic lustre; light organs milk white 
tinted with golden. 
Readily distinguished from Jpnops Murrayi by a greater length in the 
caudal region, a longer anal fin, a smaller number of branchiostegal rays, a 
greater number of scales in the lateral line, and ventrals farther backward 
and farther from the dorsal fin. 
The specific name is given in honor of Professor Alex. Agassiz. 
Station. Latitude. Longitude. Depth, Temperature. Bottom. 
3413 2° 34’ N. 92° 6! W. 1360 fathoms 36° F. Glob. Oz. dk. Sp. 
MYCTOPHID. 
Myctophum oculeum sp. n. 
Plate LVI. fig. 2. 
Br. r. 10; D. 14 (138-15); A. 15 (14-16); V.8; Ll. 85; Ltr. 24+1+4 4. 
Moderately elongate and compressed, depth more than one sixth of the 
total length. Head about one fourth of the length from snout to end of 
caudal, more than half as wide as deep, somewhat pointed in front, some- 
what convex on the forehead. Snout short, blunt, three fifths of the length 
of the eye, convex on the top, with a pronounced median internarial keel. 
Eye large, one fourth as long as the head, as wide as the interorbital space. 
