The royal natural history . ired in connection with the presence in the intestine of small parasites, and these in their turn have their habits affected according as they live in holo- tlmrians that are or are not cotton - spinners. Among the parasites of holothurians should specially be mentioned a little fish of the genus Fierasfer, that inhabits the intestine of some species, and has its food provided for it by the holothurian ; this fish club-like sea-cucumber (Mhopalo- is described on p. 438 of Vol. V. dina) (Mt size) Holothurians are of interest, as furnishing a food known as trepang, wh
The royal natural history . ired in connection with the presence in the intestine of small parasites, and these in their turn have their habits affected according as they live in holo- tlmrians that are or are not cotton - spinners. Among the parasites of holothurians should specially be mentioned a little fish of the genus Fierasfer, that inhabits the intestine of some species, and has its food provided for it by the holothurian ; this fish club-like sea-cucumber (Mhopalo- is described on p. 438 of Vol. V. dina) (Mt size) Holothurians are of interest, as furnishing a food known as trepang, which ranks with edible birds nests among the delicacies of a Chinese table. The fishing for trepang, or beche-de-mer, as the holothurians are called by the Portuguese, takes place very largely in Oriental countries, and is being extended to the Barrier Reef of Australia. All kinds are not equally esteemed, for some have too much calcareous deposit in their skin, and others get rid of their insides, and so become too lean. r/. A DEEP-SEA HOLOTHURIAN. Psychrojpotes (jf nat. size). Development of Echinoderms Few things about echinoderms are more remarkablethan their modes of reproduction, which include both asexual method, from the fertilised egg, and also one bybudding or splitting of a single individual into echinoderms, as we have already seen, have thecurious power of breaking off portions of themselves; asthe brittle-star or crinoid can break off their arms. Alsothey are able to eject the whole or a part of their viscera,a faculty which has been specially developed in some ofthe holothurians. It is still more remarkable that theportions so broken off can be grown again, and that they
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectzoology
