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Stalk :: Stalk (n.) The peduncle of the eyes of decapod crustaceans.

Xylophagous :: Xylophagous (a.) Eating, boring in, or destroying, wood; -- said especially of certain insect larvae, crustaceans, and mollusks..

Pleuron :: Pleuron (n.) One of lateral processes of a somite of a crustacean.

Peraeopod :: Peraeopod (n.) One of the thoracic legs of a crustacean. See Illust. of Crustacea.

Trichobranchia :: Trichobranchia (n.) The gill of a crustacean in which the branchial filaments are slender and cylindrical, as in the crawfishes..

Crustacean :: Crustacean (n.) An animal belonging to the class Crustacea.

Malacostracology :: Malacostracology (n.) That branch of zoological science which relates to the crustaceans; -- called also carcinology.

Dactylar :: Dactylar (a.) Of or pertaining to a finger or toe, or to the claw of an insect crustacean..

Screw :: Screw (n.) An amphipod crustacean; as, the skeleton screw (Caprella). See Sand screw, under Sand..

Remiped :: Remiped (a.) Having feet or legs that are used as oars; -- said of certain crustaceans and insects.

Protopodite :: Protopodite (n.) The basal portion, or two proximal and more or less consolidated segments, of an appendage of a crustacean..

Labrum :: Labrum (n.) An organ in insects and crustaceans covering the upper part of the mouth, and serving as an upper lip. See Illust. of Hymenoptera..

Urogastric :: Urogastric (a.) Behind the stomach; -- said of two lobes of the carapace of certain crustaceans.

Sedentary :: Sedentary (a.) Remaining in one place, especially when firmly attached to some object; as, the oyster is a sedentary mollusk; the barnacles are sedentary crustaceans..

Lobster :: Lobster (n.) Any large macrurous crustacean used as food, esp. those of the genus Homarus; as the American lobster (H. Americanus), and the European lobster (H. vulgaris). The Norwegian lobster (Nephrops Norvegicus) is similar in form. All these have a pair of large unequal claws. The spiny lobsters of more southern waters, belonging to Palinurus, Panulirus, and allied genera, have no large claws. The fresh-water crayfishes are sometimes called lobsters..

Shell :: Shell (n.) The hard calcareous or chitinous external covering of mollusks, crustaceans, and some other invertebrates. In some mollusks, as the cuttlefishes, it is internal, or concealed by the mantle. Also, the hard covering of some vertebrates, as the armadillo, the tortoise, and the like..

Ommatidium :: Ommatidium (n.) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates..

Endopleurite :: Endopleurite (n.) The portion of each apodeme developed from the interepimeral membrane in certain crustaceans.

Crayfish :: Crayfish (n.) Any crustacean of the family Astacidae, resembling the lobster, but smaller, and found in fresh waters. Crawfishes are esteemed very delicate food both in Europe and America. The North American species are numerous and mostly belong to the genus Cambarus. The blind crawfish of the Mammoth Cave is Cambarus pellucidus. The common European species is Astacus fluviatilis..

Scud :: Scud (n.) Any swimming amphipod crustacean.

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