ANCULOSA. 415 



21. A. zebra, Anthony. 



Ancnlosn gebra, Anthony, Proc. Acad. Nat. Sci.. p. 69, Feb., 1860. 



Aiiculotus zebra, Antliony, llEEVE, Moiioj^f.. t. 6, f. 52. 



Leptoxis zebra, Anthony, BiNNEy, Check List, No. 398. Brot, List, p. 26. 



Description. — Shell subglobose, smooth, moderately thick; spire 

 obtusely elevated, but slightly decorticated, and composed of four 

 convex whorls; sutures distinctly impressed; aperture broad, ovate, 

 within bluish, with the epidermal colors seen faintly through; colu- 

 mella rounded', covered with callus, which is thickened at the upper 

 part. 



Habitat. — Alabama. 



Observations. — This species presents an appearance not often seen 

 in the genus, by its mottled, variegated epidermis ; the general 

 ground color is gamboge yellow, but it is varied by yig. 828. 

 blotches of very dark brown or reddish, often running into 

 diagonal lines, which gives the shell a very lively and 

 pleasant look. Only one other species is described as ^'^l^ll 

 being similarly marked, viz. : A. flanimata, Lea; that species 

 I have never seen, but the description does not warrant me in con- 

 sidering the two identical. In old specimens the spire is often pro- 

 duced and somewhat nodulous, while the longitudinal bands become 

 broken into irregular lines, so interrupted as to become scarcely 

 more than quadrangular spots; it is one of our most beautiful spe- 

 cies. About a dozen specimens are before me. — Anthony. 



This species resembles A. picta, Conrad, particular!}' that 

 variety described by jMr. Lea as flammata., so much, that its 

 specific distinction may be considered doubtful. 



22. A. pieta, Coxijad. 



Anculosa picta, CoNRAD, Am. Jo; r. Sci., Ist per., xxx, p. 312. t. 1, f. 15, Jan.. 18.34. 



Wheatley, Cat. Shells U. S., p. 28. Ha.ni.ey, Couc^h. Misc. Mclania, t. 5. f. M. 



MCl.LER, Synopsis, p. 39, 1836. 

 Anculotus pictus, Coxrad, New Fresh-Water Shells, p. C2. 1831. Reeve, Monog. 



Anculotus, t. 3, f. 26. Jav, Cat., -tth edit., p. 276. DeKav. Moll. N. Y.. (). 10.;. 

 Leptoxis picta, Conrad, IIaldeman, Monog. Lept., t. 3, f. 74-80. BiNNEV, Check 



List, No. 377. Brot, List, p. 2S. Adams, Genera, i, p 307. 

 Anculosa Foremani, Lea, Philos. Proc. ii, p. 243, Dsc, 1812. Philos. Trans., ix, 



p. 29. Obs., iv, p.29. Wheatley, Cat. Shells U. S., p. 28. 

 Leptoxis Foremani. Lea. BlNNEV, Check List, No. 3.V.). 

 Anculosa flammata, Lea, Philos. Proc., ii, p. 243. Philos. Trans., ix, p. 30. Obs., 



iv, p. 30. 



