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Near where we stood the ground was rather more open, and we saw the black mud covered with numberless marine animals, sea-urchins, holothuria, or sea-slugs, crabs, and several other creatures, many of brilliant hues, which contrasted curiously with the dark mud over which they were crawling. The roots of the trees were also covered with mussels, oysters, and other Crustacea.
For hear it, worn-out epicures, and old Indians who bemoan your livers, this little Holothuria knows a secret which, if he could tell it, you would be glad to buy of him for thousands sterling. To him blue pill and muriatic acid are superfluous, and travels to German Brunnen a waste of time.
In the second place on the Barrier Reef is found the 'Holothuria', from which the 'beche-de-mer' is prepared. It is a kind of sea-slug, averaging from one to over two feet in length, and four to ten inches in girth. In appearance, these sea-cucumbers are more repulsive, looking like flabby black or green sausages, and squirting out a stream of salt water when pressed.
On the present occasion he is unusually elated, for he has made the discovery of a Holothuria with twenty tentacula, a species of the Echinodermata which Professor Forbes, in his book on Star-Fishes, has said was never yet observed in the British seas.
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.
In this species are comprehended three Ascidiæ, of different forms; one Anomia, one Terebratula attached to a Fusus, two Lepas, and a Balanus. Six Holothuria, belonging to three different species, were observed: a large Thalassema gave us a long-wished for opportunity of observing, that this species belongs to the Holothuria, and not to the Annulides.
We saw also edible fungus, exported to San Francisco, and thence to Hong Kong, solely for the use of the Chinese; tripang, or bêche-de-mer, a sort of sea-slug or holothuria, which, either living or dead, fresh or dried, looks equally untempting, but is highly esteemed by the Celestials; coprah, or dried cocoa-nut kernels, broken into small pieces in order that they may stow better, and exported to England and other parts, where the oil is expressed and oil-cake formed; and various other articles of commerce.
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 Linnæus to the tobacco-pipe fish; the fourth was a species newly discovered, 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.
There are a few species of Holothuria, of which the trepang is the best known example. It is largely collected in the Gulf of Manaar, and dried in the sun to prepare it for export to China. A good description and figures of its varieties are still desiderata. Parasitic Worms.
Thus, too, the same power of progressive individuation articulates the tentacula of the polypus and holothuria into antennæ; thereby manifesting the full emersion and eminency of irritability as a power which acts in, and gives its own character to, that of reproduction.
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