52 LAND AND FRESH-WATER SHELLS OP N. A. [PART IT. 



the callous deposits on the columella sufficiently well marked 

 to place it in that genus. 



Melania jiroducta. — Shell folded, subfusiform, rather thin, horn 

 colored ; spire obtusely conical ; sutures impres sed ; whorls eight, 

 flattened ; aperture elliptical, whitish. 

 Habitat. — Tennessee. 

 Diameter, -57; length, -70 of an inch. 



Observations. — This species has rather distant folds on the iirst six 

 whorls, and a disposition to tuberculatiou on the middle of the 

 lower whorl, the superior part being disposed to be striate. The 

 base of the columeha is twisted, and the channel well impressed. 

 The aperture is quite one-half the length of the shell. — Lea. 



Melania grossa. — Shell ovate, folded, thick; spire obtusely ele- 

 Fi"- 102 vated, composed of about eight convex Avhorls rapidly 

 attenuating to an acute apex ; whorls folded, except the 

 last two; body-whorl tumid, smooth; color of epidermis 

 light greenish olive; aperture elliptical, whitish inside; 

 columella rounded; outer lip much curved, with a well 

 marked sinus at the base. — Anthony. 

 Habitat. — Tennessee. 



Observations. — A short, thick species whose chief characteristics 

 are its bulbous form, and short but prominent ribs on the upper 

 whorls. All the whorls but the last are remarkably narrow and 

 crowded, lines of growth prominent, four or five stria3 revolve 

 around the base of the shell. Eesembles M. glandiila, nob., in forn, 

 but its different color and texture, with its prominent ribs, will at 

 once distinguish it. — Anthony. 



The figure is from Mr. Anthony's t3'pe. 



2. P. Foremanii, Lea. 



Melania Foremanii, Lea, Pliilos. Proc, ii, p. 242. Philos. Trans. , Ix, p. 27. Obs.. iv, 

 p. 27. BixNEY, Check List, No. 111. Brot, List, p.30. Reeve, Monog., f. 432. 

 Wheatlet, Cat. Shells U. S., p. 25. 



Description. — Shell tuberculate, pjTamidal, rather thick, yellowish- 

 brown; spire elevated; sutures irregularly lined; whorls nine, flat- 

 tened; aperture elongated, angular and channelled at the base, within 

 whitish. j 



Habitat. — Alabama. 



