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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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534Maggenti and Gardnerenvelopes or covers. 2. (ARTHRO: Crustacea) In thoracicCirripedia, membranous covering <strong>of</strong> the body, <strong>of</strong>tenstrengthened by calcareous plates. 3. (BRACHIO) Prolongation<strong>of</strong> the body wall as fold <strong>of</strong> ectodermal epithelium. 4.(BRYO: Phylactolaemata) Ciliated fold <strong>of</strong> colony wall coveringone to four small, sexually produced colony progenitorpolypides. 5. (MOLL) A membranous covering that secretesthe shell; the marginal glands produce the periostracum;pallium.mantle canal (BRACHIO) One <strong>of</strong> several flattened, tube-likeextensions <strong>of</strong> the body cavity into each mantle lobe.mantle cavity Specialized cavity found in certain mollusks,brachiopods and crustaceans lined with epidermis and usuallyexposed to sea or fresh water, or air, due to habitat;may or may not contain part <strong>of</strong> the viscera; pallial chamberor cavity; mantle chamber.mantle cells (ARTHRO: Insecta) Corneagenous cells <strong>of</strong> the eyeenclosing the retina.mantle fold (MOLL: Bivalvia) In oysters, one <strong>of</strong> 3 small folds atthe edge <strong>of</strong> a mantle lobe.mantle groove (BRACHIO) Site <strong>of</strong> proliferation <strong>of</strong> the periostracumand bears the setae.mantle lobe 1. (BRACHIO) Lobe <strong>of</strong> the body wall that secretesand lines the valves; in some, cecae project into perforations(punctae) in the shell serving as food repositories <strong>of</strong>glycoproteins and mucroproteins, inhibitors <strong>of</strong> boring organisms,and accessory respiratory structures. 2. (MOLL:Bivalvia) In oysters, one <strong>of</strong> 2 thin epithelial extensions <strong>of</strong>the mantle adjoining the valve.mantle papilla see caecummantle skirt (MOLL) Ro<strong>of</strong> <strong>of</strong> the mantle cavity formed by theprojection <strong>of</strong> the mantle from the edge <strong>of</strong> the visceralmass.manubrium n. [L. manubrium, handle] 1. (ARTHRO: Crustacea)In fish parasitic Copepoda, the handle or distal part <strong>of</strong> theattachment organ. 2. (ARTHRO: Insecta) The basal part <strong>of</strong>the furcula <strong>of</strong> collembolan springtails; part <strong>of</strong> the sternumassociated with the cavity <strong>of</strong> the prothorax <strong>of</strong> Coleoptera.

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