inhabited by numerous Sea-jellies (acalepha) of the smaller kind, by
porpoises and whales, as well as by immense varieties of the Petrels or
Procellariae.

The second zone extending from 31 degrees south to 22 degrees south
latitude was inhabited by immense numbers of the larger and more
beautiful kind of Sea-jellies (acalepha) particularly by those that have
the power of stinging. Within this zone I saw but one whale, one shoal of
porpoises, and not a single one of the long-winged water birds or
Petrels; in fact I but once in the whole of this distance saw any birds;
there were also here a great variety and numbers of Sea-jellies
(acalepha) of the smaller kinds. Do then the larger acalepha in this zone
perform the office of the birds in the more southern one, and prey upon
the smaller species of their own kind?

The third zone is the one with which I have commenced the journal of this
day.

WATER SNAKES.

November 29. Latitude 15 degrees 26 minutes 32 seconds south; longitude
122 degrees 3 minutes east.

We saw six or seven water snakes (Hydrus) this day, all about three feet
long, of a dirty yellow colour, with black stripes, the head black, they
were furnished with fins like an eel, were of a very graceful form, and
moved on the water exactly like a snake, with the head a little elevated;
when they dived they turned up on their backs before they sank: we caught
one of these snakes, also a moth and butterfly. A large bat (Pteropus ?)
flew about the vessel this evening and pitched several times on the boat