294 DEEP SEA FISHES. 
of the dorsal. The distance from the anal to the origin of the ventrals is 
nearly equal to-the depth of the head, that is a little more than half the 
length of the head. Pectorals short and broad, not reaching to the bases 
of the ventrals. 
Description taken from a specimen sixteen and one half inches in length. 
Entire surface and linings of the body cavities deep black. 
Formule and size of scales would bring this species close to A. Agassizii 
G. B., but the latter is less elongate, and has a shorter snout and more 
curvature on the forehead. A. productus Gill has a smaller eye, larger scales, 
and less elongation than the present form, A. Blanfordi Alc. is probably a 
close ally of A. fundulus; the former is figured without a lateral line. 
Distinguished from A. tenebrosus Gilb. by the smaller number of scales above 
the lateral line, by the small scales of the lateral line, by the longer maxil- 
lary, by the greater length of the base of the anal as compared with that 
of the dorsal, and by the greater length of the body in front of the dorsal 
fin. 
Station. Latitude. Longitude. Depth. Temperature. Bottom. 
3360 Go aiZe NG 82° 5! W. 1672 fathoms 36.4° F. Fne. bk. dk. gn. S. 
3392 ie OF O07 ING 79° 40’ W. 1270) 65 36.4° F. Hard. 
HALOSAUROIDS. 
HALOSAURID A. 
In the report on the deep sea fishes obtained by the “Challenger” Expe- 
dition, published in 1887, this family was treated as if composed of a single 
genus, Halosaurus; in the latest publication on the collections of the 
“ Investigator,’ 1896, the treatment is the same. The same arrangement 
is followed in the present report, excepting that the genus is divided into 
two subgenera, the first of which, with H. Owenii Johns. as the type, is 
characterized by scales on the crown and forehead and by little or no to 
moderate enlargement of the scales of the lateral line, and the second, 
having for types HZ. rostratus Giint., and H. macrochir Giint., is distinguished 
by absence of scales on the top of the head and by much enlarged scales 
on the iateral line. On alcoholic specimens of the two subgenera there is 
a difference in the luminous organs which probably appears to some extent 
on the living individuals; the membranes covering the lanterns are nearly 
or quite transparent on /Z. Oweni and its allies of the first group, while on 
