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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> 645walls allowing currents <strong>of</strong> water through the gills. 5. (PO-RIF) Pore openings entering the interior cavity (the spongocoelor atrium) <strong>of</strong> sponges; incurrent pores; inhalent pores.ostial a. see ostium bursae.ostium bursae (ARTHRO: Insecta) The copulatory entrance <strong>of</strong>the bursa copulatrix in female Lepidoptera, correspondingto the vulva <strong>of</strong> other female insects with the genital openingon the 8th abdominal segment.ostium oviductus (ARTHRO: Insecta) In female Lepidoptera,the primary opening <strong>of</strong> the genitalia through which theeggs are laid, situated near the 9th abdominal segment.ostracum n. [Gr. ostrakon, shell] (MOLL: Bivalvia) 1. The entirecalcareous part <strong>of</strong> the shell. 2. The outer part <strong>of</strong> the shellsecreted at the mantle edge.otidium see statocystotocrypt n. [Gr. ous, ear; kryptos, hidden] (MOLL) An open invagination<strong>of</strong> the integument <strong>of</strong> the foot in certain mollusks.otocyst see statocystotolith see statolithotoporpae n.pl. [Gr. ous, ear; porpe, pin] 1. (CNID: Hydrozoa)Lines <strong>of</strong> cnidoblasts on the exumbrella. 2. (CNID: Scyphozoa)Internal tissue tracts on the bell surface above thesensory organs at the margin <strong>of</strong> the jellyfish bell.outer coelomic space (BRYO: Stenolaemata) In free-walledforms, the coelomic space between the outer skeletal walland the exterior membranous wall.outer face (MOLL: Gastropoda) In a shell whorl, the surfacebetween the shoulder and the abapical suture or margin <strong>of</strong>base; same as side <strong>of</strong> whorl.outer leaf crown see corona radiataouter ligament see lamellar ligamentouter lip (MOLL: Gastropoda) Labrum; the outer edge <strong>of</strong> theaperture <strong>of</strong> a univalve shell extending from the suture tothe foot <strong>of</strong> the columella.outer pigment cells see accessory pigment cells

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