EO 
10 DESCRIPTION OF 
Remarks.—Several specimens of this small species are before me, one of them conside- 
} rably larger than the other, and possessing one more whorl. ‘The whorls are inflated, but 
| flattened in the middle. ‘This gives a roundness to their superior part. The perforation 
is small, and the fold scarcely observable. ‘The aperture is less than half the length of the 
shell, and contracted. 
LYMN#A FUSIFORMIS. 
Testa fusiformi, subcrassa, crebré striatd, pallido-luted, imperforatd; spird breviusculd; suturis leviter impressis ; 
anfractibus senis, planulatis; aperturd angusto-ellipticd. 
Shell fusiform, rather thick, closely striate, pale yellow, imperforate; spire rather short; sutures slightly impressed ; 
whorls six, flattened; aperture narrow-elliptical. 
Hab. Niagara river, Lewistown, New York. Tobias Wagner. My Cabinet, and Cabinets of P. H. 
Nicklin, and Tobias Wagner. Diam. .35, Length .60 of an inch. 
Remarks.—Among a number of interesting shells collected by Mr. T. Wagner, during 
a long journey in the interior of our country, were several specimens of this species, which 
has not been, I believe, before noticed. Itis found with and is somewhat allied to L. deci- 
diosa, (Say.) It differs in being more fusiform, having a larger aperture and flatter 
whorls, and in being imperforate. It is about the size of, and resembles L. casta, herein 
described. It differs in being less elevated in the spire, in the whorls being more flattened, 
in having a distinct and curved fold, and in being imperforate. The aperture is nearly 
two-thirds the length of the shell. The last two whorls are disposed to be wrinkled. 
LYMN#A RUSTICA. 
Testa subfusiformi, tenui, imperforatd; spird subelevatd; suturis impressis; anfractibus quinis, subconvexis; aper- 
turé angusto-ellipticd. 
Shell subfusiform, thin, imperforate; spire rather elevated; sutures impressed; whorls five, rather convex ; aperture nar- 
row elliptical. 
Hab. Poland, Ohio. Dr. Kirtland. My Cabinet, and Cabinet of Dr, Kirtland. Diam. .15, Length 
.35 of an inch, 
Remarks.—A single specimen only of this was received with some other species. It 
is a small and rather slender species, with a regular tapering spire and an aperture about 
: half the length of the shell. ‘The whole shell is covered over with a red coating of the 
oxide of iron, giving it a rough aspect. 
LYMNAA PLICA. 
Testd turritd, subtenui, luted, striatd, imperforatd; spird subelevatd; suturis impressis; anfractibus quinis, convexis; 
apertura parva, elliptica. 
Shell turrited, rather thin, yellow, striate, imperforate; spire rather elevated; sutures impressed ; whorls five, convex; 
aperture small, elliptical. 
Hab. Tennessee, Dr. Troost. My Cabinet, and Cabinet of Dr. Troost, Diam. .18, Length .38 of i 
an inch, : 
Remarks.—A small species, with a large incurved fold. It resembles L. exigua, here- 
in described, in size, but in the form of the columella it is entirely different. The aper- 
ture is about half the length of the shell. 
