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Spermatophore :: Spermatophore (n.) A capsule or pocket inclosing a number of spermatozoa. They are present in many annelids, brachiopods, mollusks, and crustaceans. In cephalopods the structure of the capsule is very complex..

Antenna :: Antenna (n.) A movable, articulated organ of sensation, attached to the heads of insects and Crustacea. There are two in the former, and usually four in the latter. They are used as organs of touch, and in some species of Crustacea the cavity of the ear is situated near the basal joint. In insects, they are popularly called horns, and also feelers. The term in also applied to similar organs on the heads of other arthropods and of annelids..

Gastrotrocha :: Gastrotrocha (n.) A form of annelid larva having cilia on the ventral side.

Lugworm :: Lugworm (n.) A large marine annelid (Arenicola marina) having a row of tufted gills along each side of the back. It is found burrowing in sandy beaches, both in America and Europe, and is used for bait by European fishermen. Called also lobworm, and baitworm..

Annelid :: Annelid (a.) Alt. of Annelida.

Spirable :: Spiodea (n. pl.) An extensive division of marine Annelida, including those that are without oral tentacles or cirri, and have the gills, when present, mostly arranged along the sides of the body. They generally live in burrows or tubes..

Sandworm :: Sandworm (n.) Any one of numerous species of annelids which burrow in the sand of the seashore.

Annelidan :: Annelidan (a.) Of or pertaining to the Annelida.

Neurocord :: Neurocord (n.) A cordlike organ composed of elastic fibers situated above the ventral nervous cord of annelids, like the earthworm..

Pseudhaemal :: Pseudhaemal (a.) Pertaining to the vascular system of annelids.

Parapodium :: Parapodium (n.) One of the lateral appendages of an annelid; -- called also foot tubercle.

Tubicolae :: Tubicolae (n. pl.) A division of annelids including those which construct, and habitually live in, tubes. The head or anterior segments usually bear gills and cirri. Called also Sedentaria, and Capitibranchiata. See Serpula, and Sabella..

Lurg :: Lurg (n.) A large marine annelid (Nephthys caeca), inhabiting the sandy shores of Europe and America. It is whitish, with a pearly luster, and grows to the length of eight or ten inches..

Strobile :: Strobilation (n.) The act or phenomenon of spontaneously dividing transversely, as do certain species of annelids and helminths; transverse fission. See Illust. under Syllidian..

Tubivalve :: Tubivalve (n.) A shell or tube formed by an annelid, as a serpula..

Paragnathus :: Paragnathus (n.) One of the small, horny, toothlike jaws of certain annelids..

Lithophagous :: Lithophagous (a.) Eating or destroying stone; -- applied to various animals which make burrows in stone, as many bivalve mollusks, certain sponges, annelids, and sea urchins. See Lithodomus..

Appendiculata :: Appendiculata (n. pl.) An order of annelids; the Polych/ta.

Annelidan :: Annelidan (n.) One of the Annelida.

Telotrochous :: Telotrochous (a.) Having both a preoral and a posterior band of cilla; -- applied to the larvae of certain annelids.

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