compartmental plate
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compartment(al) plate — In sessile cirripeds (Verrucomorpha, Balanomorpha), rigid articulate skeletal element (valve) forming part of shell wall. (Syn. mural plate) [Moore and McCormick, 1969]. One of several rigidly articulated plates forming wall in sessile cirripeds… … Crustacea glossary
mural plate — see compartmental plate … Dictionary of invertebrate zoology
mural plate — (Subclass Cirripedia): Compartmental plate [Stachowitsch, 1992] … Crustacea glossary
rostrum — (1) Anteriorly projecting, unpaired, usually rigid median extension of carapace between eyes or ocular peduncles; (2) anterior beaklike projection of valve margins overhanging incisure or notch (Ostracoda); (3) unpaired anteroventral plate of… … Crustacea glossary
ala — One of pair of posteriorly directed cephalic shield extensions; in cirripeds (Balanomorpha), triangular lateral part of compartment plate delimited from paries, which is overlapped by adjacent compartment plate with or without radius. (Pl. alae)… … Crustacea glossary
radius — In cirripeds (Balanomorpha) lateral part of compartment plate adjoining paries, marked off from it by change in direction of growth lines and by depressed exterior surface; overlaps ala of adjoining compartment plate [Moore and McCormick, 1969].… … Crustacea glossary
carina — A raised ridge on the surface of the exoskeleton [Ingle, 1980]. A ridge or keel of the exoskeleton (Fig. 1, 2). (Pl. carinae) [Perez Farfante and Kensley, 1997]. Any keel like structure, as on dorsum of pleon on some amphipods; in cirripeds,… … Crustacea glossary
paries — Median triangular part of cirriped compartment plate, with lower edge attached to basis and adjoined laterally by margins of carinal tectum [Moore and McCormick, 1969]. Median triangular part of each compartmental plate in sessile barnacles. (Pl … Crustacea glossary
carina — n., pl. nae [L. carina, keel] 1. Any keel like structure or elevated ridge. 2. (ARTHROPODA: Crustacea) a. A well defined projecting ridge on the outer surface of the carapace of podocopan ostracods. b. The unpaired posteriodorsal plate of… … Dictionary of invertebrate zoology
longitudinal septum — In cirripeds (Balanomorpha), wall of tubes disposed normal to inner and outer laminae of compartment plate separating them. (Syn. parietal septum) [Moore and McCormick, 1969]. Partition disposed normal to inner and outer laminae of compartmental… … Crustacea glossary
