32 THREE CRUISES OF THE “BLAKE.” 
Antennarius (Fig. 211), has become adapted to life on the 
bottom, and is found nearly down to the hundred-fathom line. 
Chaunax pictus, a closely related genus, was taken by the 
“Blake” in 288 fathoms. The Ceratiidz are the only pedicu- 
lates which are exclusively and characteristically abyssal. Me- 
lanocetus, a deep-sea Lophius in appearance, ranges from 360 
to 1,850 fathoms; the “Blake” took it in 992 fathoms. 
The Alepocephalide, the Halosauridse (Fig. 213), and Chau- 
liontide (Fig. 214), are families which have become perma- 
Fig. 215. — Ipnops Murrayi. About 1 
nent residents on the bottom. To the former belongs Alepo- 
cephalus Agassizii (Fig. 212), a magnificent fish which attains 
a length of at least three feet, is covered with silvery scales, and 
is noted for its large eyes; while allied to the scopelids, but 
inhabitants of deep water, belong certain genera, as Ipnops (Fig. 
Fig. 217. — Bathypterois quadrifilis. About 3. 
215), Bathysaurus (Fig. 216), with its huge dorsal fin and fine 
teeth set in many rows, Bathypterois (Fig. 217), and Bentho- 
saurus (Fig. 218), a small-eyed fish, with large ventral. 
The pectoral rays of Bathypterois are strangely modified ; the 
anterior ray is independent of the others, and so articulated that 
