ICAR - Central Marine Fisheries Research Institute
Abstract
Marcia opima has a small, glossy, puffed-up shell which ranges from a creamish-brown to grey colour. There are radial dark markings on the shell running from the umbo to the shell margin. Inner surface of the shell is white. Hinge has three teeth and a long ligament. Anterior lateral teeth is absent in left valve, but corresponding depression is present on the right valve