FAMILY TURBINID^E MELANIA. 97 



aperture about one-third of total length, elliptical, angular at base ; columella with an im- 

 pressed curve. Color, horn. Length, 0' 63; width, 0' 26. Tennessee. 

 M. blanda. (Id. lb. pi. 6, fig. 34.) Shell folded, conoidal, rather thin, shining : spire rather 

 elevated, striate above ; sutures impressed ; whorls 7, rather flattened ; aperture one-third of 

 total length, elliptical, angular at base. Length, - 69; diameter, 0' 26. Tennessee. 

 M. crebri-costata. (Id. lb. pi. 6, fig. 35.) Shell with numerous slightly curved folds, except on 

 lower half of body-whorl, conoidal, rather thick : sutures linear ; whorls 7, flattened ; aper- 

 ture about one-third of the total length, elliptical, angular below. Color, horn; mouth bluish. 

 Length, - 9; diameter, - 28. Tennessee. 

 M. laqueata. (Say, op. cit. p. 17 ; Am. Conch, pi. 47, fig. 1.) Shell oblong-conic : spire longer 

 than the aperture, elevated, acute at tip. Whorls moderately convex, with about seventeen 

 regular elevated equal equidistant costa? on the upper half of each whorl, extending from 

 suture to suture, but little lower on the spire, and obsolete on the body-whorl; suture mode- 

 rately impressed ; lip and columella a little extended at base; sinus obsolete. Length, 0"S. 

 Tennessee. 

 M. lima. (Consad, Fr. Wat. Shells, p. 54, pi. 8, fig. 8.) Shell conic or subfusiform, with ap- 

 proximate nodulous spiral lines of unequal size: body-whorl angulated, with a series of 

 prominent tubercles ; base with two lines, the upper one nodulous ; aperture nearly half the 

 length of the shell, contracted and acutely angular above, and obtusely pointed at the base ; 

 lip very thin. Color, olive within, with purple bands. Alabama. 

 M. multilineata. (Say, Ac. Sc. Vol. 2, p. 380 ; Am. Conch, pi. 47, fig. 1.) Shell gradually 

 tapering ; apex generally much eroded : whorls about seven, a little curved, with numerous 

 filiform elevated subequal lines which are from 10 - 20 in number. Length, - 9 ; width, - 4. 

 Allied to elevata, but the whorls are convex and the lines more numerous. Pennsylvania, 

 New-Jersey. 

 M. nupera. (Say, Des. etc. p. 16; Am. Conch, pi. 8, fig. 1.) Shell oblong, suboval. Whorls 

 five, slightly rounded : body-whorl with one or more revolving series of subequal equidistant 

 tubercles on its upper part ; second volution with two series, the others with slightly elevated 

 longitudinal lines ; aperture longer than the spire, which is often decorticated; suture not 

 deeply impressed ; sinus of upper angle profound ; lip concave, with a callus near the upper 

 angle. Length, 0'S. Wabash river. 

 M. nassula. (Conrad, op. cit. p. 55, pi. 8, fig. 9.) Shell elevated. Whorls convex or subangu- 

 lated, with longitudinal ribs crossed by numerous spiral elevated lines ; about seven on the 

 penultimate whorl, and about eleven on the body-whorl : suture impressed ; apex much 

 eroded. Alabama. 

 M. curreyana. (Lea, Am. Phil. Trans. Vol. 8, p. 180, pi. 6, fig. 36.) Shell strongly folded, 

 conoidal, rather thick : spire rather elevated; suture irregularly impressed; whorls seven, 

 subconvex ; aperture about one-third of the total length, angular below, Color, horn; pur- 

 plish within. Length, - 73; diameter, - 27. Kentucky. 

 M. edgariana. (Id. lb. pi. 6, fig. 37.) Shell folded, conoidal, transversely striate, rather thin : 

 whorls eight, rather flattened; aperture rather more than one-fourth the total length, ellip- 

 tical, angular below. Color, yellowish brown; within bluish. Length, 0'77; diameter, 

 ' 29. Te/viessee. 

 Fauna — Part 6. 13 



