ded rest- ner of various marine annelids; the ing on the floor of the tank or com- tentacule and. the branchie are ing in contact with the plants or compressed and contracted about rock-work sides of the tank, but re- the head, like a brush; and as the mained suspended night and day in TEREBELLA… … seldom swam for more than five SKATE SUCKER.—Pon ricata.—[Natural size.] attach themselves to the bodies of verte- tobdella mu;
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