Freshwater Molluscs of India: An Insight of into Their Diversity, Distribution and Conservation - Aquatic Ecosystem: Biodiversity, Ecology and Conservation - page 169

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

Pila ( Turbinicola ) saxea (Reeve) Shell oblong-ovate, rather solid, with a narrow

umbilicus, spire rather obtuse, whorls a little
depressed round the upper part, obsoletely
angled and then rounded; olive, aperture
pyriformly oblong, columellar lip thinly
refl ected

Hill streams around Khandala and Igatpuri,
Western Ghat

Maharashtra

Valvata piscinalis (Mueller) Shell globose, brownish yellow, whorls 5-6,

deeply and narrowly umbilicate, depressed at
the apex, with dense, fi ne longitudinal striations
and faint spiral ridges

Lakes, slow running rivers Kashmir

Mainwaringia paludomoidea (Nevill) Shell conical, imperforate, spire acuminate,

bright yellowish brown, body whorl with three
distinct, broad dark brown bands showing
through the aperture, sculpture with spiral striae

Attached on the trunks and aerated root of
mangroves trees submerged at high tide

Gangetic delta

Cremnoconchus syhadrensis (Blanford) Shell globose, perforate, periostracum olive

green to brown, whorls 4 ½, body whorl large,
suture distinct, sculptured with distinct spiral
granular ridges in the upper part and fi ne spiral
striae in the lower half, aperture oval, a broad;
white band in between two brown bands inside
the aperture

Hill streams Maharashtra (Western Ghats)

Cremnoconchus ( Lissoconchus ) carinatus
(Layard)

Shell ovately conical, spire short and exerted,
whorls infl ated, sharply keeled in the middle;
sculptured with minute longitudinal striations;
shell olive-yellow, marked with two indistinct
broad brown bands, seen distinctly in the aperture

Hill streams Maharashtra (Western Ghats)

Cremnoconchus ( Lissoconchus ) conicus
(Blanford)

Shell ovately conical, suture distinct, angle at
the periphery

Hill streams Maharashtra (Western Ghats)

Potamopyrgus ( Indopyrgus ) nevilli
(Thiele)

Shell oval, smooth; spire short and blunt, body
whorl large, aperture slightly oblique, margin
thickened, operculum thin, transparent and
paucispiral

Estuarine creeks Not known beyond

Andaman's

Bithynia tentaculata kashmirensis (Nevill) Shell conically ovate, spire more pointed,

aperture pyriformly ovate

Very common in paddy fi elds Kashmir

Bithynia troscheli (Paasch) Shell small, ovately fusiform, suture rather

deep, aperture ovate

Very common in paddy fi elds Kashmir