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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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> 289an articulation with two condyles; bicondylar.dicostalia see secundibractsdicranoclone n. [Gr. dikranon, pitchfork; klon, twig] (PORIF) Amegasclere spicule having a desma with swollen terminalcouplings.dictyonal framework (PORIF) Spicules fused together into arigid framework.dictyonine n.; pl. dictyonalia [Gr. diktyon, net] (PORIF: Hexactinellida)Rays <strong>of</strong> regular hexactines fused at their tips t<strong>of</strong>orm a more or less regular three dimensional network.dictyosome n. [Gr. diktyon, net; soma, body] The flattenedset <strong>of</strong> membranes resembling a stack <strong>of</strong> plates found in aGolgi body.dicyclic a. [Gr. dis, twice; kyklos, circle] (ECHINOD: Crinoidea)Calyx plates <strong>of</strong> primitive stalked crinoids that have an additionalfive infrabasal plates on the aboral side <strong>of</strong> the basalseries found in the monocyclic condition; further platesmay be present.didactyl a. [Gr. dis, twice; daktylos, finger] Having two tarsi <strong>of</strong>equal length. didactyl n.; didactylism n.; didactylous a.didelphic a. [Gr. dis, twice; delphys, womb] Having two uteri.see amphidelphic.diductor muscles (BRACHIO) Two pairs <strong>of</strong> muscles that openvalves <strong>of</strong> articulates, commonly attached to brachial valveimmediately anterior to beak; principal pair usually insertedin pedicle valve on either side <strong>of</strong> adductor muscles withposterior accessory pair.didymous a. [Gr. didymos, double] Formed in pairs; twin;double.diecdysis n. [Gr. dia, through; ekdysis, escape from molt]Condition in which ecdysial processes are going on continuouslyand one ecdysis cycle passes rapidly into another.diecious see dioeciousdiel a. [L. dies, day] Occurring in a 24 hour period.dietella n.; pl. -ae (BRYO) Large laterobasal pore chamber thatfunctions in interzooidal communication. see pore cham-

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