Copulatory bursa see bursa copulatrix bursa

copulatory cap (ACANTHO) The mucilaginous, proteinaceous material thought to aid the union of partners during copulation and insemination that soon hardens to form a covering around the extremity of the female genitalia.

copulatory chamber (ANN: Oligochaeta) An invagination containing the male pore that reaches through the body wall into the coelom; bursa copulatrix; copulatory pouch.

copulatory organ Organs for the transfer or reception of sperm during copulation.

copulatory pouches (ANN: Oligochaeta) The spermathecae of earthworms in older publications.

copulatory sac Bursa copulatrix, copulatory pouch, seminal receptacle, seminal bursa.

copulatory setae/chaetae (ANN: Oligochaeta) Those that appear near or in the same segment as the spermathecae in earthworms; sometimes referring to similar setae in an adjacent, but athecal segment.

copulatory warts (NEMATA) In males, enlarged genital papillae.

copulo [L. copulare, to couple] "In copulo" correct form for describing copulation.

coquina n. [Sp. shellfish, cockle] A whitish limestone made up of marine shell fragments and corals, used for roadbeds and building materials.

coracidium n. [Gr. korax, crow] (PLATY: Cestoda) 1. An on-chosphere or hexacanth embryophore. 2. The ciliated, free-swimming onchosphere of a fish tapeworm hatching from the egg.

coral n. [Gr. korallion, coral] (CNID) The calcium carbonate exterior skeleton formed by corals inhabiting warm shallow waters, masses of which form reefs and islands.

coralliferous a. [Gr. korallion, coral; ferre, to bear] Pertaining to coral.

coralline n. or a. [Gr. korallion, coral] 1. Any corallike animal, as certain Hydrozoa and Bryozoa. 2. Resembling coral in the pinkish-red color.

corallite n. [Gr. korallion, coral] The skeleton of an individual coral polyp.

coralloid a. [Gr. korallion, coral] Having the form or appearing like coral; coralliform.

corallum n. [Gr. korallion, coral] The skeleton of a solitary polyp or a colony of corals.

coral reef A calacareous mass formed by colonies of coral organisms; types include: 1. Fringing reef, extending out to a quarter of a mile from shore. 2. Barrier reef, separated by a lagoon from a shore. 3. Atoll, a circular reef encircling a lagoon of water.

corbel n. [L. corbis, basket] (ARTHRO: Insecta) An ovate area of fringed bristles at the distal end of the tibia in certain coleopterans.

corbicula n.; pl. -lae [L. dim. corbis, basket] (ARTHRO: In-secta) A smooth area on the outer surface of the hind tibia of Apidae, surrounded on each side by a fringe of long curved hairs, that serves for carrying pollen and other materials to the nest; a pollen basket.

corbiculate a. [L. dim. corbis, basket] Having the shape of a small basket; pertaining to corbiculae.

corbiculoid teeth (MOLL: Bivalvia) Having 3 cardinal teeth in each valve and a median tooth below the beak in the right valve. see arcticoid teeth.

corbula n. [L. corbula, little basket] (CNID: Hydrozoa) A phy-lactocarp with leaflike protective branches arching over the enclosed gonangia.

corcula n. [L. dim. cordis, heart] (ARTHRO: Insecta) A chamber of the dorsal vessel, through which the blood flows.

cord n. [L. chorda, cord] 1. Any long, rounded cordlike structure. 2. (MOLL: Gastropoda) A round-topped, moderately coarse spiral or transverse linear sculpture on a shell surface.

cordate a. [L. cordis, heart] Having the shape of a heart; cordiform.

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