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Palpus :: Palpus (n.) A feeler; especially, one of the jointed sense organs attached to the mouth organs of insects, arachnids, crustaceans, and annelids; as, the mandibular palpi, maxillary palpi, and labial palpi. The palpi of male spiders serve as sexual organs. Called also palp. See Illust. of Arthrogastra and Orthoptera..

Palingenesy :: Palingenesy (n.) That form of evolution in which the truly ancestral characters conserved by heredity are reproduced in development; original simple descent; -- distinguished from kenogenesis. Sometimes, in zoology, the abrupt metamorphosis of insects, crustaceans, etc..

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

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

Oarfoot :: Oarfoot (n.) Any crustacean of the genus Remipes.

Crustacean :: Crustacean (a.) Of or pertaining to the Crustacea; crustaceous.

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

Squamellae :: Squame (n.) The scale, or exopodite, of an antenna of a crustacean..

Anomuran :: Anomuran (a.) Irregular in the character of the tail or abdomen; as, the anomural crustaceans..

Nauplius :: Nauplius (n.) A crustacean larva having three pairs of locomotive organs (corresponding to the antennules, antennae, and mandibles), a median eye, and little or no segmentation of the body..

Flagellum :: Flagellum (v. t.) A lashlike appendage of a crustacean, esp. the terminal ortion of the antennae and the epipodite of the maxilipeds. See Maxilliped..

Squillitic :: Squilla (n.) Any one of numerous stomapod crustaceans of the genus Squilla and allied genera. They make burrows in mud or beneath stones on the seashore. Called also mantis shrimp. See Illust. under Stomapoda.

Pygidium :: Pygidium (n.) The caudal plate of trilobites, crustacean, and certain insects. See Illust. of Limulus and Trilobite..

Hair :: Hair (n.) A slender outgrowth from the chitinous cuticle of insects, spiders, crustaceans, and other invertebrates. Such hairs are totally unlike those of vertebrates in structure, composition, and mode of growth..

Podophthalmite :: Podophthalmite (n.) The eyestalk of a crustacean.

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

Abdomen :: Abdomen (n.) The posterior section of the body, behind the thorax, in insects, crustaceans, and other Arthropoda..

Epicarican :: Epicarican (n.) An isopod crustacean, parasitic on shrimps..

Rostrum :: Rostrum (n.) The anterior, often spinelike, prolongation of the carapace of a crustacean, as in the lobster and the prawn..

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

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