Environmental Engineering Reference
In-Depth Information
Lamellidens marginalis
(Lamarck)
Umbon prominent, colour brown with a lighter
band along the margin
Pools, ditches, large water bodies, rivers, lakes
Widely distributed
Lamellidens phenchooganjensis
(Preston)
Shell elongately ovate, less thick, umbones fl at,
anterior side angled, posterior margin obtusely
rounded
Large water bodies, rivers, lakes
Mizoram
Parreysia
(
Parreysia
)
annandalei
(Preston)
Shell oval, umbones rather small lateral teeth
strong, curved, posterior and anterior scar small
and deeply excavated
Large water bodies, rivers, lakes
Assam
Parreysia
(
Parreysia
)
burmanus
(Blanford)
Shell ovate, solid, dark brownish, sculptured
with coarse-corrugated ridges in anterior region
and rather irregular nodulose in the rest
Large water bodies, rivers, lakes
Manipur: Bishenpur
Parreysia
(
Parreysia
)
corbis
(Benson)
Shell oval, inequilateral, thin, subventricose,
concentrically zoned with bluish green and
ochraceous yellow
Large water bodies, rivers, lakes
Assam
Parreysia
(
Parreysia
)
corrugata
(Mueller)
Shell elliptical to oval, smooth; umbones
prominent; lunule well marked, sculptured with
somewhat radiating, oblique, linear ridges,
green in colour
Large water bodies, rivers, lakes
Throughout India
Subsp. l
aevirostris
(Benson)
Subsp.
nagpoorensis
(Lea)
Parreysia
(
Parreysia
)
favidens
(Benson)
Shell thick and heavy, infl ated, with strong
zigzag ribs on beak, unequilateral and angulate
both on anterior and posterior margins, cardinal
teeth strong and broad
Lakes, west land, ponds, pools, rivers
Andhra Pradesh, Assam,
Bihar Jharkhand, Maharashtra
Meghalaya, Mizoram, Orissa,
Rajasthan, Tamil Nadu, Uttar
Pradesh, West Bengal
Va r.
assamensis
(Preston)
Va r.
chrysis
(Benson)
Va r.
deltae
(Benson)
Va r.
marcens
(Benson)
Va r.
plagiosoma
(Benson)
Va r.
viridula
(Benson)
Parreysia
(
Parreysia
)
gowhattensis
(Theobald)
Shell thick, anterior side curved and short,
posterior side long and truncated and suddenly
sloping on the posterior margin
Brahmaputra Basin,
Assam
Parreysia
(
Parreysia
)
rajahensis
(Lea)
Shell triangular, infl ated, posteriorly angulated;
umbon elevated, pointed; sculptured with
prominent growth lines
River bed, wet land
Narmada River, Rann of
Kutch; Sepree and Sahib
Ganj; West Bengal: Kolkata
Parreysia
. (
Parreysia
)
sikkimensis
(Lea)
Shell short, broad and ovate, anterior end
rounded; posterior gradually tapering; anterior
muscle scar deep and oval, posterior semilunar
Cold water lakes
Arunachal Pradesh; Assam,
Mizoram, Uttar Pradesh, West
Bengal
(continued)
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