covered, and
to which we appropriated the name of _Odontopyga_, because the fundament
is armed with five calcareous teeth; the belly is furnished with small
tubes, and the back covered with bumps. Two more belong to the species
_Thyone_; and the seventh kind of Holothuria ought, properly speaking,
to form a class apart, not having tubular feet, but adhering, by means
of their sharp skin, to extraneous objects, on which account they might
be called _Sinapta_; their feelers are fringed and they live concealed
among stones. We found five small kinds of sea-leeches; and among three
kinds of star-fish, the _Asterias Echinites_, the large radii of which
easily inflict a severe wound; another had the form of the _Asterias
Luna_, was eight inches in diameter, without radii, and had more the
appearance of a round loaf of bread somewhat flattened. Of corals, the
variety was very great, as may be judged from the circumstance of our
having collected twenty-four kinds within so short a space of time.
_Fungia_ is quite at home here; for, independently of _F.
agariciformis_, _scutaria_, and _limacina_, a long kind was also found,
having, like the two former, only one central cavity; they are found in
shallow water among other corals. Of tabular corals already known, there
remain to be mentioned, _Pavonia boletiformis_, _Madrepora prolifera
abrotanoides_, _corymbosa_, _plantaginea_, and _pocillifera_.

The inhabitants of the Navigator Isles brought us the little _Psittacus
australis_, _Columba australis_, and another very prettily marked dove,
having green plumage, ornamented with a dark violet line across the
breast, and the feet and head of a reddish purple. It climbed about the
sides and roof of its cage, did not leave its perch when it wanted to
drink, but stooped down so low as merely to hang by its legs; it would
not eat seed, but lived principally on fruit, particularly bananas, all
which closely agreed with the habits of parrots.

During our passage to the equator, _Sterna solida_ and _Dysporus Sula_
alighted frequently on our vessel, and allowed themselves to be taken.
The latter, when old, has a blue beak and red feet; when young, a red
bill and flesh-coloured legs. The exterior nostrils are entirely
wanting; but in every part are air-cells between the skin and the
muscles.

Besides these animals, six varieties of _Pteropodes_ were caught; also a
_Glaucus_, differing from that of the Atlantic _Janthina penicephala
Per._, a