Freshwater Molluscs of India: An Insight of into Their Diversity, Distribution and Conservation - Aquatic Ecosystem: Biodiversity, Ecology and Conservation - page 183

Table 11.4 (continued)
Name Key character for identii cation Habitat Distribution

Corbicula cashmiriensis (Deshayes) Ventral margin evenly arched, ending posteriorly

in a distinct truncated beak in full-grown
specimens; sculptured with prominent-raised ribs;
hinge broad and strongly developed

River belt Kashmir

Endemic

Corbicula krishnaea (Ray) Shell small, thin, striae regular and distinct,

escutcheon bearing distinct ribs

Krishna river Known from type locality

only Krishna river, near
Sangli, Pune and Maharashtra

Corbicula peninsularis (Prashad) Shell ovately triangular, dorsal margin convex,

posteriorly down into a regular beaklike
structure, pallial line wide

Estuarine water with tidal infl uence Known from type locality

Bombay

Corbicula striatella (Deshayes) Shell thick, sculpture strong, hinge with

prominent teeth

River Throughout India

Batissa infl ata (Prime) Shell oblique; umbo more anteriorly placed,

anterior margin short and more sloping,
posterior margin curved

Creeks of tidal infl uence Andaman and Nicobar Islands

Batissa similis (Prime) Umbo slightly anterior, anterior margin short

and less sloping, posterior margin curved and
biangulate

Creeks of tidal infl uence Andaman and Nicobar Islands

Polymesoda ( Geloina ) bengalensis
(Lamarck)

Shell subtrigonal, tumid, solid, thick,
unequilateral; periostracum blackish brown,
coarsely striated

Estuarine water with low salinity Orissa: Mahanadi estuary;

West Bengal: Gangetic delta;
Nicobar Island

Polymesoda ( Geloina ) erosa (Solander) Shell large, subtrigonal, unequilateral, solid,

periostracum thin yellowish or thick and
brownish

Back waters and estuaries Andhra Pradesh: Krishna;

Andaman and Nicobar
Islands: Lawrence and
Havblock Islands, Car
Nicobar, Kondul, Trinket
Island, Goa, Maharashtra

Villorita cornucopia (Prashad) Shell high and narrow, umbones broad, high

and recurved umbonal region with coarse
concentric ridges, ligament very long and thick.
Anterolateral short with a groove

Found in backwater of South India,
occasionally in freshwater

Kerala back water

Pisidium ( Pisidium ) casertanum (Poli) Shell ovate, subcordate, strong, somewhat tumid,

feeble but distinct concentric striae, ligament pit
long and deep extending to about the middle of
the hinge plate; juveniles yellowish, full grown
shells deep yellow with darker olive bands

Upper cretaceous Kashmir

Mud dwellers
Hill streams