s. A small _Gelasimus_ burrows under the ground, and makes
himself a subterranean passage from the water to the dry land. The
female has very small claws, but the male has always one very large pink
claw, which is sometimes the right and sometimes the left.

A large brownish _Gecarcinus_ lives entirely on the land, in holes of
his own making; his gills accordingly are not open combs, but consist of
rows of bags closely pressed together, and somewhat resembling bladders.
_Hippa adactyla_ F. is very frequent here, and keeps itself concealed
under the sands on the sea-shore. It was from these that Fabricius, who
has given a wrong description of their legs, formed his species _Hippa_;
Latreille mentions them by the name of _Remipes testudinarius_. Six
kinds of _Pagurus_. Of Crustacea already described, _Palaemon
longimanus_, _Alphaeus marmoratus_, and _Squilla chiragra_; the legs of
the last are red, and formed like a club; it uses them as weapons of
offence or defence, and inflicts wounds in striking them out by a
mechanism peculiar to itself. The number of insects collected on the low
land was very small; among them the _Staphylinus erytrocephalus_, also a
native of New Holland; an _Aphodius_, scarcely to be distinguished from
the _limbatus Wiedem._ of the Cape of Good Hope; an _Elater_ of the
species _Monocrepis_; of _Oedemera_, three varieties of the species
_Dytilus_, to which belong the _Dryops livida_ and _lineata_ F.; two
small varieties of _Apate_; _Anthribus_, _Cossonnus_, _Lamia_, _Sphinx
pungens_, and a large _Phasma_.

No place could be more convenient for the observation of the Mollusca
and Radiata than Cape Venus. At a few hundred paces from the shore is a
coral reef, which at low water is completely dry. In the shoal water,
between the reef and the shore, is found the greatest variety of the
more brittle kinds of coral, and among their sometimes thick bushes,
mollusca and echinodermes lie concealed. The rapid movements of a small
_Strombus_, which, when taken, beat about it with its shell, formed like
a thin plate of horn, and armed with sharp teeth, were very curious. On
breaking the stone which is formed by fragments of coral, a _Sternaspis_
was found burrowing in the interior. Seven classes of Holothuria were
examined; three belonged to the species of _Holothuria_, called by
Lamarck _Fistularia_, but which name had already been given by Linnaeus
to the tobacco-pipe fish; the fourth was a species newly dis