186 DESCRIPTION OF 



Remarhs. — A single specimen only, and that imperfect, is before me. The 

 body whorl has seven or eight distinctly marked strise. On the penultimate 

 there are three, and these give a sulcate appearance to the shell. 



Section V. — Striate Melanin. 

 Melania striata. Plate 6, Fig. 49. 



Testa striata, conoided, subtenui, tenebroso-fuscd, supern^ carinata; spird suhelevata; suturis im- 

 pressis; anfractibus octonis, convexis; aperturd parvd, ellipticd, intus subrufd. 



Shell striate, conical, rather thin, dark brown, carinate above; spire somewhat elevated; sutures im- 

 pressed; whorls eight, convex; aperture small, elliptical, within reddish. 



Hab. Tennessee. Dr. Troost. 



My Cabinet, and Cabinet of Dr. Troost. 

 Diam. .21, Length .49 of an inch. 



Remarks. — Rather a small species of a dark reddish brown. In some indi- 

 viduals the folds are numerous. — In others the strisB predominate and cover 

 nearly all the whorls. The aperture is rather more than one-third the length 

 of the shell. 



\ 

 Melania pilula. Plate 6\ Fig. 50. 



Testd striata, subglobosd, crassd, tenebroso-fuscd; suturis subtmpressis ; anfractibus convexis; aper- 

 tura ovatd, magna, infra subangulatd, intus purpuratd. 



Shell striate, subglobose, thick, dark brown ; sutures somewhat impressed ; whorls convex ; aperture ovate, 

 large, angular at the base, within purplish. 



Hab. Tennessee. Dr. Troost. 



My Cabinet, and Cabinet of Dr. Troost. 

 Diam. .34, Length .43 of an inch. 



Remarks. — This is a very distinct species, and is quite as globose as M. 

 suhglohosa, Say. Two specimens were received, the spires of which are not 

 perfect. I should presume, that when perfect, they would be found to have 

 four whorls. The raised strise are very distinct, and consist of eighteen in 



