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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 739The wall <strong>of</strong> the prostome. see rhabdion.prosartema n. [Gr. pros, forward; artema, earring] (ARTHRO:Crustacea) In Decapoda, a row <strong>of</strong> dense setae on the innermargin <strong>of</strong> the basal segment <strong>of</strong> the antennular peduncle;also called eye brush.proscolex n. [Gr. pro, before; skolex, worm] (PLATY: Cestoda)The anterior part <strong>of</strong> a divided scolex.prosiphonate lining (PORIF: Calcarea) In recent Sphinctozoa,the lining <strong>of</strong> the atrial cavity <strong>of</strong> one chamber growing forwardinto the base <strong>of</strong> the next-youngest chamber.prosochete n. [Gr. proso, forward; chetos, need] (PORIF) Aninhalant canal that lead to chambers.prosocline a. [Gr. proso, forward; klinein, to slant] 1. (MOLL:Bivalvia) Hinge teeth or shell sloping anteriorly. 2. (MOLL:Gastropoda) Usually referring to growth lines leaning forward(adapically) with respect to the direction <strong>of</strong> the helicocone.prosocyrt a. [Gr. proso, forward; kyrtos, curved] (MOLL: Gastropoda)Used to describe the growth direction <strong>of</strong> the helicoconecurving forward.prosodus n.; pl. -i [Gr. prosodos, procession] (PORIF: Desmospongiae)Tiny channels between the inhalant canalsystem and exhalant canals. see aphodus.prosogyrate a. [Gr. proso, forward; gyros, a circle] (MOLL: Bivalvia)Describing beaks anteriorly directed; prosocoelous.prosoma n. [Gr. pro, before; soma, body] 1. (ARTHRO) Theanterior part <strong>of</strong> the body, usually applied to the cephalothorax.2. (ARTHRO: Chelicerata) Fused imperceptably tothe opisthosoma in Acari. see proterosoma. 3. (ARTHRO:Crustacea) Commonly limited by the major articulation; inbarnacles, large saclike body in position <strong>of</strong> head in front <strong>of</strong>,and rostrad to, thoracic appendages; prosome. 4. (ARTHRO:Insecta) The head and the two succeeding fused segments<strong>of</strong> Coccoidea. prosomal a.prosome n. [Gr. pro, before; soma, body] The anterior bodyregion, specifically used in Phoronida.. see prosoma.prosopon n. [Gr. proso, forward; ponos, work] (MOLL: Bival-

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