Ampullaria. 
MOLLUSCA. 
93 
Genus XLVII.—AMPULLARIA. — Lamarck . 
Shell globular, or globularly discoidal, or discoidal and 
umbilicated; spire short, the volutions ventricose; aper¬ 
ture entire, oblong-oblique, and its length considerably 
exceeding its breadth; operculum testaceous, annular, 
with its nucleus almost central, but placed rather nearer 
the inner side; covered by an olive-green epidermis, and 
exactly fitting the aperture. 
1. Ampullaria patula. — The Wide Ampullaria, pi. 
XLIV. fig. 23. 
Ampullaria patula. Lamarck, Env. de Paris, p. 148. Sow- 
erby, III. p. 152, pi. 284, two middle figures. Fleming, p. 316. 
Helix mutabilis, Brander, fig. 51. 
Slightly ovate, ventricose, smooth; body large; spire small, 
very short, consisting of four rapidly decreasing, rounded volu¬ 
tions, sometimes slightly flattened above, terminating in an 
acute apex; aperture subovate; outer lip expanding, smooth, 
and even on the edge; inner lip broadly, but thinly reflected 
on the columella, with a large open umbilicus situate in its 
centre, very slightly closed on the left edge of the opening, 
below which a lamina protrudes, which forms the lining of the 
umbilicus. 
Found in the London Clay at Barton. 
2. Ampullaria nobilis — The Noble Ampullaria, pi. 
XLIV. fig. 28. 
Arnpjullaria nobilis. Sowerby, VI. p. 39? pi. 522, fig. 1. 
Fleming, p. 317. 
Body subglobose; spire occupying about a third of the 
length of the shell, conical, consisting of five slightly inflated 
volutions, with a rather sharp apex; base convex, and destitute 
of an umbilicus; aperture oblong-oval, sublimate, somewhat 
contracted above, and extending about a half of the length of 
the shell. 
Found in the Carboniferous Limestone called the Black 
Rock, Queen’s County, Ireland. 
3. Ampullaria helicoidis. —The Helix-like Ampullaria, 
pi. XLIV. fig. 29, 30. 
Ampullaria helicoidis. Sowerby, VI. p. 40, pi. 522, fig. 2. 
Fleming, p. 317. 
Nearly discoidal, smooth; spire short, obtuse, the volutions 
inflated, and deeply divided by the sutural line; body consider¬ 
ably inflated at the sides; base with a deep, moderately-sized 
umbilicus; aperture ovate, somewhat contracted above, and well 
rounded below; the outer lip considerably expanded. Diame¬ 
ter nearly double its length. 
Found in the Carboniferous Limestone of Cork and Queen’s 
County, Ireland. 
4. Ampullaria ambulacrum —The Gallery Ampullaria, 
pi. XLIV. fig. 31, 32. 
Ampullaria ambulacrum. Sowerby, IV. p. 97, pi. 37‘2. 
Fleming, p. 317* 
Nearly spherical, smooth; body large, much inflated; spire 
small, abruptly conical, consisting of seven ventricose volutions, 
with a deep spiral, flat-bottomed canal, with nearly perpendicular 
margins, winding round the base of each; aperture oblong-ovate, 
contracted above, and rounded at the base; outer lip smooth, 
and even; inner lip broadly reflected on the columella above, 
but becoming gradually narrower as it descends, and is lost in 
the outer lip as it passes the umbilicus, which is open, and plain 
internally. 
The A. canaliculata of Lamarck lias a strong resemblance to this 
species; but the umbilicus being destitute of an internal spiral groove, 
the trench-like appearance of its canal, and the inflation of its sides, 
form good distinctions. 
Found in the London Clay at Stubbington, ITordwell, and 
Muddiford. 
5. Ampullaria acuta. — The Acute Ampullaria, pi. 
XLIV. fig. 33, 34. 
Ampullaria acuta. Lamarck, Env. de Paris, p. 147. Sow¬ 
erby, III. p. 151, pi. 284, three upper figures. Fleming, p. 
316. Helix mutabiles , Brander, fig. 58, 59. 
Subovate, smooth, ventricose; body large; spire conical, a 
fourth of the length of the shell, consisting of five inflated, 
deeply divided volutions, terminating in an acute apex; aperture 
oblong-ovate, its length nearly double its width, contracted and 
pointed above, rounded at the base; outer lip plain, and smooth 
on the edge, and not so much expanded as the former species; 
pillar lip gently curved, reflected on the columella, moderately 
broad, equal in width its whole length, and generally covering 
half of the umbilicus, which is naturally rather small. 
Found in the London Clay at Christ Church. 
6. Ampullaria Sigaretina —The Sigaretus-like Ampul¬ 
laria, pi. XLIV. fig. 35, 36. 
Ampullaria Sigaretina. Lamarck, Env. de Paris, p. 148. 
Sowerby, III. p. 152, pi. 284, two lower figures. Fleming, p. 
316. 
Body of the shell large, much inflated, and forming a short, 
oblique oval; spire small, subconic, consisting of four ventricose, 
deeply defined, rapidly decreasing volutions; aperture large, 
suborbicular, a little contracted and pointed above, and much 
rounded at the base; outer lip much expanded, smooth, and 
even on the edge; inner lip broadly reflected on the columella, 
and subdivided, one part entering the umbilicus, and lining 
more than half its internal surface; the other portion closes the 
umbilicus; external surface with sharp, elevated, irregular, 
slightly waved stria?, or lines of growth. 
Found in the London Clay at Bognor, Hampshire. 
Genus XLVIII.—PALUDINA— Lamarck. 
Shell ovate, or oblong; spire somewhat turreted; volu¬ 
tions smooth; rounded and subcarinated in most species; 
aperture subrotund, ovate, or oblong, a little angulated 
above, and slightly modified on the inner side by the 
gibbosity of the body volution; operculum corneous, 
with concentric lines of growth, and provided with a 
sublateral nucleus. 
1. Paludina concinna _The Neat Paludina, pi. XLV. 
fig. 1. 
Paludina concinna. Fleming, p. 316. Vivipara concinna , 
Sowerby, I. p. 80, pi. 31, fig. 4, 5. 
Conical, smooth; spire with four well defined, slightly inflated 
volutions, angulated below, and ending in a sharp apex; aperture 
ovate, acute above, and rounded beneath. 
Found in the London Clay at Barton Clilf. 
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