Donax (Paradonax) aperittus   Melvill  (Clam)
Organism information awaits expert curation
Class: Bivalvia

Size: Length 9.84 mm; height 4.70 mm; width 3.58 mm

Color: White or ash colored.

Shell small, transversely elongated. Umbos posterior, pointed. Anterior margin rounded; ventral margin slightly convex; anterior-dorsal margin straight and gradually sloped; posterior-dorsal margin straight and gradually sloped; posterior margin short; interior margin of the ventral side serrated. Sculptured with very fine concentric striae; radial striae also fine but posteriorly ridged like. Ligament small, lunule almost absent.
In the left valve the cardinal complex consists of a thin lamellated anterior and posterior tooth, anterior laterals absent, posterior lateral weakly developed. In the right valve the cardinal complex consists of a knob-like ridged cardinal tooth and a well developed posterior lateral tooth.
Adductor muscle scars well developed. Anterior adductor scar oval shaped, posterior adductor scar circular at the base but elongated anteriorly. Sinus equal on both the valves, developed less than half of the length of shell, rises from posterior adductor scar almost in parallel fashion with rounded anterior end, and convex ventral end, falls obliquely to the pallial line and in confluence with it.

Synonym (s)
Donax aperittus Melvill, 1897
Donax aperittus Gravely, 1941
Donax aperittus Satyamurti, 1956
Donax (Serrula) aperittus Ray, 1968
Donax (Serrula) aperittus Melvill, 1928
Donax (Paradonax) aperittus Subba Rao and Dey, 1968

Common Name (s)
Economic Importance and Threats



• Orissa, Puri INDIA
• Tamil Nadu, Pamban INDIA (Record: 1986, 1991)
• West Bengal INDIA
• Orissa, Off Puri INDIA (Record: 24/03/1916-29/03/1916)
• Tamil Nadu, Chennai INDIA (Record: 1991)

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Subba Rao, NV and Dey, A (1986) Contributions to the knowledge of Indian marine molluscs 2. Family Donacidae Records of the Zoological Survey of India. Occasional paper no. 91 ZSI, Calcutta 30 pp Available at - NIO, Goa
  • Rao, NVS; Rao, KVS and Maitra, S (1991) Marine molluscs State fauna series 1: Fauna of Orissa Zoological Survey of India, Calcutta Part 3 1-175 Available at - NIO, Goa

Page last updated on:2009-10-12

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