Description:-

Large, inequilateral and inflated shell. Prominent and elevated umbo. Broad, round anterior and posterior margin. Anterior portion longer than the posterior. Shell is sculptured with fine concentric striae and conspicuous growth lines. Hinge plate is obliquely truncated by a transverse septum just in front of the anterior cardinal teeth. Anterior part of the hinge plate deeply excavated. Dorsal most anterior lateral tooth of right valve reduced to a thin longitudinal ridge inside the hinge cavity.

Threats:-

Not recorded

Remark:-

Habitat:-

Typically found in water of depth of 0 to 35 meters (0 to -115 feet) prefers tropical conditions. Mostly found in n sandy bottoms, at shallow subtidal levels.

Synonyms:-

Mactra subrostrata Reeve, 1854

References:-

Jugnu, R and V. Kripa, 2008. Prevalence of non toxic and harmful algal blooms along Kerala coast. Marine Fisheries Information Service T&E Ser.,195, 3-5.
Bijukumar, A. 2012. Keralatheerathe Kadal Jeevikal (Marine Animals of Kerala Coast- A Field Guide). Kerala State Biodiversity Board, Thiruvananthapauram, Kerala 304pp. (in Malayalam)