IngliżShell reaching a large size, usually rather thin, fragile, moderately inflated and triangularly wedge-shaped in outline, with a highly variable sculpture. Dorsal margin nearly straight or slightly concave, posterior margin generally truncate. Ventral margin widely convex posteriorly, straightish to shallowly depressed anteriorly. Outer surface of valves with 15 to 30 radial ribs which may be smooth to densely set with short, open spines. Dorsal most radial rib frequently with a series of short and sharp spines protruding along the dorsal margin of shell. Inner surface of shell with shallow grooves corresponding to the external radial ribs. Internal nacreous layer rather thin, undivided, occupying the anterior 2/3 to 3/4 of valves. Posterior adductor scar completely enclosed within the nacreous area. Colour: outside of shell slightly shiny, translucent olivaceous tan, often tinged with darker purplish brown or grey toward the umbones. Interior similarly coloured, iridescent on nacreous area.
Dehra traduzzjoni
Tradott mill-Ingliż minn BING
Din it-traduzzjoni hija purament indikattiva: minħabba l-kwalità limitata tat-test sors, id-deskrizzjonijiet morfoloġiċi huma disponibbli biss bl-Ingliż fil-verżjoni BETA tas-sistema. L-informazzjoni multilingwi se tkun disponibbli fil-ħarġiet futuri.
MaltiQoxra li jintlaħaq daqs kbir, is-soltu pjuttost irqaq, fraġli, moderat minfuħ u triangularly-forma ta felli fil-qosor, bil-varjabbli ħafna skultura. Il-marġini tad-dahar dritta kważi jew ftit marġini konkavi, posterjuri ġeneralment bil-ponta maqtugħa. Bridges marġini konvessi ħafna posteriorly, straightish li shallowly baxxi anteriorly. Fuq barra tal-wiċċ tal-valvoli bil-kustilji radjali ta ' 15 sa 30 li jistgħu ikunu lixxi biex tissettja densament mal-spines qasir, miftuħa. Dorsali ħafna radjali kustilja spiss ma ' serje ta ' spines fil-qosor u jaqtgħu toħroġ l barra matul il-marġini tad-dahar tal-qoxra. Wiċċ ta ' ġewwa tal-qoxra bil minċotti baxxi li jikkorrispondi mal-kustilji radjali esterni. Intern nacreous tas-saff irqiq pjuttost, indiviż, li jokkupaw l-anterjuri 2/3 sa 3/4 tal-valvoli. Sabiħa adductor posterjuri kompletament magħluqa fi ħdan iż-żona nacreous. Kulur: barra l-qoxra trasluċidi, kemmxejn tleqq olivaceous tan, ħafna drabi tinged aktar skur kannella fil-vjola jew griż lejn l-umbones. L-intern bl-istess mod ikkulurit, magħrufa dwar iż-żona nacreous.