20 DESCRIPTION OF 
MELANIA JAYANA. 
Testa tuberculatd, subfusiformi, crassd, pallido-corned; spird exsertd; suturis linearibus, curvatis; anfractibus sub- 
convenxis, medio impressis, tuberculorum duplici serie cinctis; columella incurvatd, supernd incrassatd; apertura for- 
mam trapezit habente, intus albidda. 
Shell tuberculate, subfusiform, thick, pale horn colour; spire exserted; sutures linear and curved; whorls rather convex, 
impressed in the middle, surrounded by a double series of tubercles; columella incurved, thickened above; aperture trape- 
zoidal, whitish within, 
Hab. Cany Fork. De Kalb county, Tennessee. Prof. Troost. My Cabinet, and Cabinets of Dr. Jay 
and Prof. Troost. Diam. .78, Length 1.20 of an inch, 
Remarks.—Dr. Jay had two specimens of this species, and I owe to his kindness the 
possession of one of them. It very closely resembles the M. armigera, (Say,) in most of 
its characters, but may at once be distinguished by the double row of tubercles, the armi- 
gera never possessing distinctly more than one row: below the sutures, however, there are 
sometimes imperfect tubercles, which are caused by the protrusion of the tubercles of the 
superior whorl. ‘This protrusion also takes place in the Jayana, but causes in it only a 
constant curvature in the linear suture. 
The apex of the specimen is much eroded, and consequently I am not sure of the num- 
ber of the whorls, probably eight or nine. ‘The aperture may be rather more than one- 
third the length of the shell, and is acutely angular at the base, with rather a deep sinus. 
The callus above causes a considerable sinus there. The operculum is dark brown, the 
radii converging at the lower interior edge. 
ANCULOSA RUBIGINOSA. 
Testd ovato-gibbosd, crassa, levi, rubiginosd; spird subelevatd; suturis impressis; anfractibus planulatis; apertura 
enormiter ovata, intus albidd; columellé crassd, tenebroso-purpured. 
Shell ovately gibbous, thick, smooth, rusty colour; spire rather elevated; sutures impressed; whorls flattened; aperture 
irregularly ovate, within whitish; columella thick, dark purple. 
Hab. Warrior River, Alabama. Dr. Brumby. My Cabinet, and Cabinets of Dr. Griffith, Dr. Fore- 
man, and Mr. Clark. Diam. .40, Length .60 of an inch. 
Remarks.—A single, and not a very perfect specimen is before me. The middle of 
the whorl is flattened, indeed a little impressed, and this causes a curve in the outer lip. 
It is obscurely banded, and the whole of the columella is purple. The aperture is nearly 
two-thirds the length of the shell. The spire is more exserted than usual in the Anculose, 
but not perfect in this specimen. Jour whorls are perceptible.* 
ANCULOSA GRIFFITHIANA. 
Test ovato-gibbosd, crassa, crebré et transverse striata, fasciatd; suturis impressis; anfractibus quaternis, planu- 
latis; apertura ovata, intus fasciatd; columelld crassd, tenebroso-purpured. 
Shell ovately gibbous, thick, closely and transversely striate, banded; sutures impressed ; whorls four, flattened; aper- 
ture ovate, within banded; columella thick, dark-purple. 
Hab. Coosa River, Alabama. Dr, Brumby. My Cabinet, and Cabinets of Dr. Griffith, Dr. Fore- 
man, and Mr. J. Clark. Diam. .50, Length .60 of an inch. 
Remarks.—The distinctive characters of this species, are the transverse strie# and the 
flattened side. This flatness causes an obtuse angle below, and one above. One of the 
two specimens, under examination, is more banded, and has a less number of stria than 
the other. The aperture is nearly three-fourths the length of the shell. 
* Several very fine specimens have been since received, from Dr. Foreman. 
