CHARACTERISTIC DEEP-SEA TYPES. — FISHES. 29 
reasonable to believe that these fishes live at comparatively mod- 
erate depths, like the members of the family Trichiuride. 
Among the bottom-loving groups, the sculpin descends to 732 
fathoms ; its representatives go back to the tertiary formations. 
The scorpenoids descend to 440 fathoms. Scorpæna occurs 
in the eocene of Oran. 
The blennies are still represented at a depth of 471 fathoms. 
The gobies have a representative in deep water, Callionymus 
(Fig. 207), a huge sea-robin-like fish. The discovery of a mem- 
Fig. 207. — Callionymus Agassizii. About }. 
ber of this old-world family in the Gulf of Mexico, at a depth 
of 340 fathoms, is one of the noteworthy features of the 
* Blake" exploration. 
We should also mention the tile-fish dredged off our Middle 
Atlantic coast in deep water, the remarkable Lopholatilus cha- 
meeleonticeps. 
Chiasmodon niger (Fig. 208) is a species which has been 
Fig. 208. — Chiasmodon niger. About 4. (U. S. F. 0.) 
often described, but its common name, “the great swallower,” 
is so characteristic that we may here recall it to memory. It is 
able to take in fishes fully half as large as itself. Günther 
