Elements of zoölogy a Elements of zoölogy : a textbook elementsofzolo00tenn Year: c1875 Holothurian, or ' Sea-Cucumber,' frondosa, North Atlantic. FIG. 671. Plates from the skin of Holothuriaiis,—magnified. particles. The different species vary from an inch to a foot in length. Pentacta frondosa (Fig. 670) is very abundant at Grand Menan, on the coast of Maine. It resembles the kind called Trepang, which the Chinese use for food.

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