Freshwater Molluscs of India: An Insight of into Their Diversity, Distribution and Conservation - Aquatic Ecosystem: Biodiversity, Ecology and Conservation - page 171

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

Stenothyra foveolata (Benson) Shell ovately conical with acute apex, suture

shallow, sculpture with spiral pits or punctuate
markings, aperture oblique ovate

Gangetic river bed within mud Bihar, West Bengal

Stenothyra hungerfordiana (Nevill) Shell small, almost cylindrical, apex obtuse Creeks of tidal infl uence Andaman's only

Stenothyra minima (Sowerby) Shell small, ovately turbinate, narrowly

perforate, whorls 5, smooth, regularly
increasing, body whorl convex and rapidly
descending in front

Riverbeds Gujarat, Maharashtra Orissa

Stenothyra nana (Prashad) Shell ovately conical, imperforate; whorls 4,

increasing very rapidly, body whorl large,
sub-rhomboidal in dorsal view

Hugli River and its tributaries West Bengal

Stenothyra ornata (Annandale and
Prashad)

Shell imperforate, ovately conical; apex acute,
spiral whorls distinctly keeled in the middle,
last 4 whorls with spiral rows of blunt,
fl attened, blackish spines

Hugli River and its tributaries West Bengal

Stenothyra soluta (Annandale and
Prashad)

Shell thick, globose, with fl attened spire,
concave at the apex

Hugli River and its tributaries with some tidal
infl uence

West Bengal: Gangetic delta.
It is a brackish water species

Stenothyra woodmasoniana (Nevill) Shell ovately conical, spire acute, concavely

excavated, body whorl subangulate, fl attened
with rounded umbilical region; sculpture
smooth or may appear malleated under large
magnifi cation

Hugli River and its tributaries with some tidal
infl uence

West Bengal: Gangetic delta.
It is a brackish water species

Gangetia miliacea (Nevill) Shell minute, less than 5 mm, ovate or

sub-cylindrical, aperture large, triangular area
between aperture and body whorl absent

Ganga river on stony substrate and form
Yamuna River at Allahabad from dense
submerged macrophytes

Bihar: Patna, Kerala, Orissa,
Uttar Pradesh, West Bengal

Iravadia annandalei (Preston) Shell elongated, whorls 6; sculptured with

indistinct, irregular, spiral lirae, interstices, not
deep, transverse obsolete

Back water Kerala: Cochin; Tamil Nadu:

Ennur back water

Iravadia ennurensis (Preston) Whorls 5, spire less pointed, lower margin of

columella not produced

Back water Tamil Nadu: Ennur back

water, Chennai

Iravadia funerea (Preston) Shell fusiform, whorls 3, sculpture with coarse

spiral lirae showing traces of transverse
striations

Back water Kerala: Cochin back water

Iravadia princeps (Preston) Whorls 7, spire less pointed, lower margin of

columella produced

Back water West Bengal: outskirts of

Kolkata