Descriptions of New Flaviatile Shells. 



Obs. A smooth, fine species, with no very prominent cha- 

 racters. May be compared with M. perfused Lea, but is less 

 cylindrical, and much less ponderous ; the whorls are also more 

 convex, and the sutures more distinctly impressed ; it is alto- 

 gether a broader and thinner shell. Some specimens are finely 

 banded, the lower band being often concealed partially by the 

 revolutions of the succeeding whorl. The body whorl has 

 three bands in the variety, and these also appear within the 

 aperture. All the specimens before me, some fifty in number, 

 are more or less decollate, and only two or three are banded. 



11. Melania Tirens. 



Plate II. Fig. 11. 



T. ovato-conica, glabra, subcrassa, virente ; spir& obtuse elevata, de- 

 collata ; anfr. superstitibus 5, convexis, ultimo amplo ; suturis valde 

 impressis ; apertura ovata, magna, albido-coerulescente ; columella in- 

 curva, subreflexa, in sinum inconspicuum producta. 



Shell ovate-conic, smooth, rather thick, spire rather obtusely 

 elevated, with a somewhat convex outline, and with sutures 

 decidedly impressed ; color light uniform green, paler towards 

 the summit: whorls, five only remaining, and indications of 

 one lost by truncation, convex ; aperture rather large, ellipti- 

 cal, bluish within ; columella well rounded, not perceptibly in- 

 dented, and with a small recurved sinus at base. 



Length 0.87 inch (22 millim.). Diam. 0.40 inch (10 millim.). 



Length of aperture 0.42 inch (10 millim.). 



Breadth of do. 0.21 inch (5 millim.). 



Habitat. Alabama. 

 My cabinet. 



Obs. A broad species with an outline and proportions not 



