10 EXPEDITION OF THE “ALBATROSS,” 1899-1900. 
extending from the surface down to, say 300 fathoms, at the outside, to 
undertake to classify them into distinct series extending from the surface 
to great depths. What is still needed is a careful exploration of the bathy- 
metrical range of the pelagic fauna on a line extending far out to sea from 
a continental slope into great depths, and a similar line along a great 
oceanic current far from any disturbing element such as an archipelago 
or submarine plateaus. 
If we knew all the species of the so-called pelagic belt it would be a 
different thing; but when the peculiar fish with pedunculated eyes which 
Chun calls a deep-sea fish, and specially characteristic of intermediate 
depths, is found by us at 100 fathoms, this, as well as the many other 
fishes and so-called deep-sea Crustacea, Holothurians, Ascidians, and Medusee 
which we caught at or about the 100-fathom line in this and in my 
former expeditions, plainly shows that as yet we are very far from know- 
ing the species which inhabit the belt between 100 fathoms or more and 
the surface1 No deep-sea expedition using better and newer appliances 
has as yet failed to bring up within these limits some so-called new 
deep-sea species if they happen to have brought it up when dropping the 
net in greater depths, while the next explorer again brings it up from 
inside the 100-fathom line. (See note.) I still reiterate that near the 
bottom, and some distance above it, a certain number of so-called 
pelagic species undoubtedly live, as well as in proximity to the con- 
tinental slopes; but that is no criterion of the mode of distribution of 
pelagic life at sea far away from continental areas. When thus caught 
Norm. —I may mention among the Fishes: Collettia, Scopelus, Myctophum, Argy- 
ropelecus, Polyipnus, Plectromus, Paralepis, Stomias, Malacosteus, Eustomias, Melam- 
phaés, Trachichthys, Sternoptyx, Cyclothone, Gonostoma, Notoscopelus, Lampanyctus, 
Cyema, Caulolepis, Hoplostethus, Chaunax, and Melanocetus. Among the Crustacea: Gnatho- 
phausia, Thysanopoda, Bentheuphausia, Willemoesia, Stylocheiron, Nematoscelis, Eu- 
phausia, Syriella, Nyctiphanes, Sergestes, Benthcecetes. The remarkable Ascidian Octac- 
nemus. he pelagic Holothurian Pelagothuria, and the greater number of the so- -called 
deep-sea Meduse: Atolla, Periphylla, and Nauphanta, as well as a number of so-called 
deep-sea Siphonophores, Bathyphysa, and the like, which are caught by the wire rope. 
1 Die Deutsche Tiefsee Expedition 1893-99, Berlin, 1899, p. 54. Zeits. d. Gesell. f. Erdkunde 
zu Berlin, 1899, XXIV., Heft 2. 
