154 LAND AND FRESH-WATER SHELLS OF N. A. [PART IV. 



Habitat. — Xew Albany, Georgia; Rev. G. AYbite : Etowali; J. Pos- 

 tell : Tuscumbia, Alabama ; B. Pybas. 



Diameter, -27 ; length, -GS inch. 



Observations. — A large number of this species was sent to me by Mr. 

 "White and Mr. Pybas. They were generally incrusted with carbonate 

 of lime, which was easily removed. It has some resemblance to Mela- 

 nia (Go7iiobasis) Deshaysiana, but it is a smaller species, with numer- 

 ous folds much inclining to the left, and generally covering all the 

 whorls. These folds are crossed by revolving striaj which form 

 numerous nodes, giving a general rough appearance to the surface, 

 Below the suture there is generally a light line. There is usually a 

 dark band at the base of the columella, more distinct inside, and 

 sometimes several indistinct ones may be observed above. It reminds 

 one of Melania (Goniobasis) Edgariana (nobis), but that is a much 

 larger species, and diflerent in color and folds. The aperture is about 

 one-fourth the length of the shell. — Lea. 



Figured from Mr. Lea's plate. 



19. G. Postellii, Lea. 



Melania Postellii, Lea, Proc. Acad. Nat. Sci., p. 166, July, 1838. BiNNET, Check 



List, No. 214. Brot, List, p. 3L 

 Melania PortelUi, Lea, Reeve, Monog. Melania, sp. 427. 

 Goniohasis Postellii, Lea, Jour. Acad. Nat. Sci., v, pt. 3, p. 343, t. 38, f. 208, March, 



18G3. Obs., IX, p. 105. 



Description. — Shell granulate, attenuate, rather thin, yellowish-olive, 



transversely striate below ; spire raised ; sutures irregularly impressed ; 



whorls rather flattened, about eight: aperture small, clllp- 

 rig.294. » ' i 



tical, white or banded within; outer lip sharp; columella 



twisted. 

 Habitat. — Altamaha River, Georgia ; James Postell. 

 Diameter, -SG; length, 1-OG inches. 



Observations. — Some dozen specimens were received from 

 Mr. Postell, which were all more or less covered with a 

 black deposit of oxide of iron, but underneath the epider- 

 mis was quite perfect, and of a light horn-color. Most of 

 the specimens have four or five brown bands, but others are entirely 

 without them, while others, again, are altogether deep purple inside. 

 It has a very close resemblance to 2Ielania {Goniobasis) caliginosa 

 (nobis), but that species is cancellate, the cancellation not amounting 



