t^^l

BlTlIi'XIA. 71
Fahulina impura, Brard, Coq. Paris, 1815, p. 183, pi. 7, fig'. 2.
PahiduwJactdator, Studer, Kurz. Verz. 1820, p. 91.
Turbo teiitaculatus, Sheppard, Trans. Linn. Soc. xiy, 1823, p. 152.
Bithynia jaculator, Eisao, Hist. Nat. Eur, Merid. iv, 1826, p. 100.
Paludiyia tentaculata, Fleming, Brit. Anim. 1828, p. 816.
liithinia tentaculata, Gray, Turtou Man. 1840, p. 93, pi. 10, fig. 120.
Bithinia (Elona) tentaculata, Moquin-Tandon, Hist. Moll, ii, 1855,
p. 628, pi. 39, figs. 23, 24.
* Bythinia tentaculata, Keeve, Brit. L. & F. W. Moll. 1868, p. 189.
" Shell: conically ovate, with a minute nearly closed umbilicus,
fulvous green, subtransparent, apex rather sharp ; whorls five,
smooth, convex, the last rather ventricose ; aperture somewhat
pyriformly ovate, lip dark-edged, scarcely reflected. Operculum
subtestaceous, striated concentrically around a central nucleus."
(^lieeve.)
Hub. Throughout Europe (in gentle streams and still waters).
jN^evill gives tlie following variety without other description
than the dimensions :—
Var. kashmirensis.
Alt. 7, diam. 4-5 mm.
Huh. Kashmir (Stoliczlca) ; Srinagar (Kashmir) (Theobald '!).
141. Bithynia cerameo-povaa, {Benson).
Bithynia cerumeupoma (Benson), Gleanings in Science, Calcutta,
ii, p. 125 (name for sp. in vol. i, p. 362) (as Puludina); J. A. S. B.
xxiv, 1855, p. 131.
BHIiynia cei-ano.ipatana, Frauenfeld, "Verliandl. zool.-bot. Wieu,
1862, p. 1166; H. & T., C. I. pi 38, figs. 1, 4.
Original description : — Small, ovate-oblong, whitish-yellow,
subliyaline, the lip at the base of the columella slightly produced;
operculum calcareous.
The above meagre description may be supplemented by the
following, based on a specimen in the British Museum :—
Shell oblong-ovate, cinereous shading to yellowish white;
whorls 5, regularly and rather rapidly increasing, convex,
minutely and obsoletely sculptured with very fine, spiral striaj
and marked with rather weak growth lines; suture well impressed;
umbilicus moderately narrow, deep; labrum continuous,
slightly reflexed, bevelled within ; aperture a little oblique, ovate ;
operculum shelly, slightly concave, with subcentral nucleus,
having about seven convolutions.
Alt. 10'75, diam. maj. 9, diam. min. 6 mm.
Aperture : alt. 6, diam. 4-25 mm.
Ilab. Bengal.
There is in the British Museum a second set of this species,
presented by Captain T. Hutton and labelled " Plains—India."
The shells in this set are of rather smaller dimensions than those