Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology 253shaped. crescentic, crescentiform a.crest n. [L. crista, crest] A ridge or linear prominence on anypart of the head or body. see cristate, carinate.cribellate a. [L. dim. cribrum, sieve] (ARTHRO: Crustacea) Aterm used to describe the irregular woven silk webs ofcertain spiders due to the action of the colulus on theemerging silk.cribellum n. [L. cribrum, sieve] 1. (ARTHRO: Chelicerata) Inspiders, a sieve-like, transverse plate, usually divided by adelicate keel into two equal parts, located in front of thespinnerets; the modified anterior median spinnerets. 2.(ARTHRO: Insecta) A sieve-like chitinous plate near the uppersurface of the mandibles.cribrate colony (BRYO: Stenolaemata) A sheetlike or frondosecolony with flattened, anastomosing branches separated byfenestrules.cribriform a. [L. cribrum, sieve; forma, shape] Sieve-like; cribrose.cribriform organ (ECHINOD: Asteroidea) Rows of small,webbed, flattened fringing spines forming enclosed passagesfor water transport from the marginal plates acrossthe oral surface of certain starfishes.cribriform plates (ARTHRO: Insecta) Cuticular pitted or sievelikeplates of certain scale insects, located on the dorsalsurface of the abdomen.cribrimorph n. [L. cribrum, sieve; Gr. morphe, form] (BRYO:Gymnolaemata) Autozooids bearing costal shields composedcompletely, or in part, of spines fused medially, andmost commonly intermittently along lengths.cribripore n. [L. cribrum, sieve; porus, passage] (PORIF) 1. Aspecialized exhalant structure of sponges where severalexhalant systems combine to empty into a subsurface cavity.2. In Polymastia (Demospongiae) an inhalent pore.cribrose see cribriformcrinite a. [L. crinitus, hairy] Having hair or hair-like growths.Crinoidea see Crinozoacrinome n. [L. crinis, hair] A network formed in cytoplasm by