NEW FRESH WATER AND LAND SHELLS. 181 



Remarks. — I owe to Mr, Edgar's kindness several specimens of this pretty- 

 species, which I name after him. It is remarkable for being folded and trans- 

 versely striate on all the whorls, except the lower part of the body whorl, which 

 is striate only. The crossing of the folds and striae give it a cancellated appear- 

 ance. The aperture is rather more than one-fourth the length of the shell. 

 The number of striae on the body whorl is about ten. 



Melania decora. Plate 6, Fig. 38. 



Testa plicatd, turrit o-acutd, subtenui, corned, superne striata; spird acuta, elevatd; suturis impres- 

 sis; anfractibus novenis, subplanulatis ; aperturd parvd, elliplicd, albidd. 



Shell folded, acutely turrited, rather thin, horn colour, above striate; spire acute, elevated; sutures im- 

 pressed ; whorls nine, rather flattened ; aperture small, elliptical, whitish. 



Hab. Tenn. Dr. Troost. 

 " Green River, Ky. Dr. Currey. 



My Cabinet, and Cabinets of Dr. Troost and P. H. Nicklin. 

 Diam. .26, Length .82 of an inch. 



Remarks. — This species resembles M. costulata, herein described. It is, how- 

 ever, more elevated in the spire, and the folds are closer. On the two lower 

 whorls the folds become obsolete. 



Melania costulata. Plate 6, Fiff. 39. 



Testa plicatd, conoided, subtenui, luted, superne carinatd; spird subproducta; suturis impressis; an- 

 fractibus novenis, subconvexis ; apertura parva, subovatd, intus cceruled. 



Shell folded, conical, rather thin, yellow, above carinate; spire rather elongated; sutures impressed; 

 whorls nine, rather convex; aperture small, sub-ovate, within bluish. 



Hab. Barren River, Ky. Dr. Currey. 



Tenn. Dr. Troost. 

 My Cabinet, and Cabinets of Dr. Currey, Dr. Troost, and P. H. Nicklin. 

 Diam. .30, Length .82 of an inch. 



Remarks. — In its general characters this species resembles M. laqueata. Say. 

 It may be distinguished in its being of less diameter and being more slender. 



