44 LAND AND FRESH-WATER SHELLS OF N. A. [PART IV. 



four bands, and three are purple inside. This species is nearest to 

 solida, herein described, but it is more elliptical, less ponderous and 

 of quite a different color, — that species being light horn-color. The 

 aperture is about four-tenths the length of the shell. — Lea. 



5. S. plena, Anthony. 



Mdania plena, Anthony, Ann. Lye. N. H. New York, vi, p. 121, t. 3, f. 21, Jlarch, 

 1854. BiNNEV, Check List, No. 210. Brot, List, p. 33. Reeve, Monog. MeL, 

 sp. 450. 



Strephohasis Spillmanii, Lea, Proc. Acad. Nat. Sci., p. 9G, 1861. Jour. Acad. Nat. 

 Sci., V, pt. 3, p. 264, t. 35, f. 74. Obs., ix, p. 86. 



Description. — Shell oblong ovate, smooth, thick, dark olive-groen ; 

 spire abruptly decollate, not elevated; whorls 4-5, convex; body- 

 whorl large, a little constricted in the centre, having two 

 Fig. 90. " ' o 



very faint, distant bands, more distinct in the interior; 



sutures irregularly and distinctly impressed; aperture 

 large, subrhomboidal, within livid and banded ; columella 

 strongly indented and twisted, with a strong sinus at 

 base. 

 Habitat. — Alabama. 

 Diameter, '45 inch (11 millira.); length, -80 inch (21 millim.). 

 Length of aperture, -42 inch (11 millim.); breadth of apertm-e, -20 

 inch (5 millim.). 



Observations. — A strong, corpulent shell, of a dark livid color, 

 which cannot well be confounded with any other; its most promi- 

 nent characters are, its full broad form, the paucity of its whorls, and 

 its sti'ongly indented columella. — Anthony. 



Mr. Anthony's shell above described was figured from a 

 specimen not mature ; for comparison another specimen from 

 the cabinet of that gentleman is here figured. It will 

 be seen to be the same, evidently, as Mr. Lea's, which 

 is copied from his plate. Spillmanii is thus de- 

 scribed : — 



Strephohasis Spillmanii. — Shell smooth, cylindrical, some- 

 what thick, dark brown or greenish, shining, very much 

 banded; spire obtuse, short, carinate at the apex; sutures 

 irregularly impressed ; whorls slightly convex above, the last one 

 constricted; aperture rather large, somewhat square, bluish and 

 much banded within; outer lip acute, sinuous; columella sinuous, 

 thickened at the base and channelled backward. 



Fi, 



