FAMILY TURBINIDjE — MELANU. 99 



M. proxima. (Say, Jour. Ac. Sc. Vol. 5, pi. 126.) Shell conic, rather slender, gradually attenuated 

 to the truncated apex : suture moderately impressed ; aperture longitudinal ; lip with the 

 edge not undulated, or but very slightly and obtusely so near the upper termination. Color, 

 black. Height, 0-6. South-Carolina. 



M. pyrenella. (Conrad, Fr. Wat. Sh. p. 52, pi. S, fig. 5.) Shell elevated, with flattened whorls 

 having an obsolete spiral line on each : suture impressed ; body-whorl angulated, the angle 

 defined by a prominent line ; base hardly convex ; lip angulated near the centre ; aperture 

 patulous ; columella obtusely rounded at the base. North-Alabama. 



M. potosiensis. (Lea, Am. Phil. Tr. Vol. 8, p. 154, pi. 6, fig. 45.) Shell carinate, conoidal, 

 rather thin : spire obtusely elevated ; sutures much impressed ; whorls 8, convex ; aperture 

 large, more than one-third of the total length, ovate. Color, brown ; within purplish. 

 Length, - 62; diameter, 0'2S. Missouri. 



M. acuto-carinata. (Id. lb. pi. 6, fig. 46.) Shell carinate, conoidal, rather thick, shining : spire 

 obtusely elevated ; sutures impressed ; whorls six ; aperture large, nearly one-half of the 

 total length, elliptical, angular at the base. Color, dark brown ; within purplish. Length, 

 - 66; diameter, 0*3. Tennessee. 



M. warderiana. (Id. lb. p. 185, pi. 6, fig. 47.) Shell carinate, club-shaped, rather thick: spire 

 conical ; sutures linear ; whorls 8, convex ; aperture ovate, rather more than one-third the 

 length of the shell. Color, very dark ; flesh-colored within. Length, • 76 ; diameter, • 37. 

 Virginia. 



M. sulcosa. (Id. lb. pi. 6, fig. 48.) Shell transversely sulcate, conoidal, thick : sutures im- 

 pressed; whorls flattened; aperture small, ovate. Color, yellowish; within whitish. Length, 

 — ; diameter, - 32. Tennessee. 



M. striatula. (Id. lb. p. 186, pi. 6, fig. 49.) Shell striate, conoidal, carinate above, rather thin : 

 spire somewhat elevated ; sutures impressed ; whorls S, convex ; aperture small, rather more 

 than one-third of the total length, elliptical. Color, dark reddish brown ; reddish within. 

 Length, 0'49; diameter, 0*21. Tennessee. 



M. pillula. (Id. lb. pi. 6, fig. 50.) Shell striate, subglobose, thick : sutures somewhat im- 

 pressed ; whorls 4? convex ; aperture ovate, about half the length of the shell, angular at the 

 base. Color, dark brown; within purplish. Length, - 43; diameter, - 34. Tennessee. 



M. circincta. (Id. lb. p. 187, pi. 6, fig. 51.) Shell striate above, turreted, rather thin : spire 

 drawn out; sutures small ; whorls 9, slightly convex, carinate in the middle ; aperture small, 

 elliptical, angular at base. Color, pale yellow, with a broad band on the carina ; within white. 

 Length, - 9; diameter, 0- 35. Tennessee. 



M. venusta. (Id. lb. pi. 6, fig. 52.) Shell subtuberculate above, fusiform, somewhat thin : spire 

 rather obtuse ; sutures roughly impressed ; whorls 6, convex ; aperture elongated at the base, 

 angulated and channelled, rather more than half the length of the shell. Color, yellowish 

 above. Length, - 8; diameter, 0" 43. Tennessee. 



M.florentiana. (Id. lb. p. 188, fig. 6, fig. 53.) Shell tuberculate, elliptical, ponderous : spire 

 obtuse ; sutures impressed ; whorls 6, slightly convex ; aperture elongated, more than half 

 the total length. Resembles M. olivula. Color, pale, occasionally with bands ; within whi- 

 tish. Length, 0"87; diameter, 0-47, Tennessee, Alabama. 



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