ANCULOSA. 411 



18. A. vittata, Lea. 



Anculosa vittata, Lea, Proc. Acad. Nat. Sci., p. 18S, 18G0. Jour. Acad. Nat. Sci., 



V, lit. :i, p. 2.')6, t. 35, f. G:J, March, 1863. Obs., ix, p. 78. 

 Leploxis vittata. Lea, Binnev, Check List, No. 397. Brot, List, p. 26. 



Description. — Shell smooth, subglobose, thick, yellowish, very 

 much baudedj spire obtuse; sutures impressed; whorls four, in- 

 flated, the last large and very much inflated, aperture round, very 

 much contracted in the throat, banded within ; columella very much 

 thickened, flattened and purplish ; outer lip sliarp and expanded. 



Habitat. — Coosa River, at Wetumpka, Alabama; E. R. Showalter, 

 M.D. 



Diameter, -30 ; length, -33 of an inch. 



Observations. — This is a very remarkable species, perhaps more 

 like a much-banded prairosa, Say, than any other. It entirely diflTers 

 from that species in the columella being very thick aud flattened, and 

 which nearly fills up half the aperture. The banded varieties of 

 prcerosa difll'r very much from each other, while this seems Fig. 819. 

 to be exceedingly regular. The five specimens before me i<^^^ 

 have each four dark brown bands nearly covering up the ^Wtj 

 yellow ground. The upper one is placed immediately under the 

 suture, aud is broader than the next two, which are approximate, 

 revolving on the middle of the whorl. The fourth is larger again 

 and revolves near to the base. I have no doubt, judging from the 

 five individuals before me, that the characters of this little species 

 will not be changeable, for they present no diflerence in phase what- 

 ever, although they are of several ages. The aperture is about two- 

 thirds the length of the shell. — Lea. 



19. A. planospira, Anthony. 



Mclania planospira, AxxnosY, Ann. Lye. Nat. Hist. N. Y., vi, p. 123, t. 3, f. 2t, 

 Marcli, 18.")4. BiSNKV, Check List, No. 208. Brot, List, p. 40. Hanlev, 

 Condi. Misc. Melauiu, t. 8, f. G7. 



Anculotus planospira, Anthony, Keeve, Monog. Anculotus, t. 2 f. 11. 



Description. — Shell short-ovate, smooth, rather thick, liglit horn- 

 colored; body-whorl large, occupying nearly the entire volume of 

 the shell ; spire nearly flat, consisting of 4-5 perfectly plane whorls, 

 scarcely elevated above the body- whorl ; aperture long narrow 

 ovate ; columella rounded, ending in a slight sinus. 



Habitat. — Tennessee. 



