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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> 731cular end <strong>of</strong> the proboscis sheath that causes the proboscidesto evert.proboscis pore (NEMER) An aperture through which the proboscisis everted; the rhynchostome.proboscis sheath (PLATY: Cestoda) In Trypanorhyncha, a tubeinto which the proboscides maybe retracted.proboscis worm The Nemertea, also called ribbon-worms.probursal a. [L. pro, before; bursa, purse] (PLATY: Turbellaria)In Tricladida, having the bursal stalk long and arching anteriorlyover the penis, so that the bursa lies anterior to thepenis. see retrobursal.procephalic lobes (ARTHRO: Insecta) In embryology <strong>of</strong> the cephalicregion, expansion <strong>of</strong> the neural ridges forming thefuture brain and divided into three neuromeres, known asproto-, deuto- and tritocerebrum; procephalon.procercoid n. [Gr. pro, before; kerkos, tail; eidos, like] (PLATY:Cestoda) The metacestode developing from the oncosphere,containing a body proper and caudal vestige <strong>of</strong> theoncosphere, the cercomere. see neotenic procercoid.process n.; pl. processes [L. processus, proceed] A markedprominence, projecting part, or outgrowth.processi longi see bacilliformprocessus ventralis (ARTHRO: Crustacea) A process on theposterior or lower side <strong>of</strong> the pars media, variable in shape,armed with thick, short spines, small in size or deeply cleft.proclinate a. [Gr. pro, before; klinein, to incline] Inclined forwardor downward.procoria a. [L. pro, before; corium, leather] (ARTHRO: Insecta)Referring to coria anterior to the prothorax.procorpus n. [L. pro, before; corpus, body] (NEMATA: Secernentea)In Tylenchida, the anteriormost cylindrical part<strong>of</strong> the esophagus, between the stylet and metacorpus (medianbulb).procrusculus n.; pl. -culi [L. pro, before; crusculus, little leg](PLATY: Trematoda) One or more stumpy, locomotive appendageson the posterior <strong>of</strong> a redia.

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