ANCULOTUS. 



Plate V. 



Species 35. (Mus. Cuming.) 



Anculotus integer. Anc. testa glohosd, cinereo-cor- 

 ned, obscurl fasciatd, spird parvd, anfractibus rotun- 

 datis, Icevibus, aperturd pyriformi-circulari, columella 

 tenue reflexd. 



The entire Anculotus. Shell globose, ash-horny, ob- 

 scurely banded, spire small, whorls rounded, smooth, 

 aperture pyriformly circular, columella thinly re- 

 flected. 



Paludhia Integra, Say, Journ. Acad. Nat. Sci. Philadelphia, 

 vol. ii. p. 171'. 

 Anculotus concolor, Anthony. 



Hub. United States. 



The smallest species of the genus, of a round Natica- 

 like form. 



Species 36. (Mus. Cuming.) 



Anculotus dentatus. Anc. testa ovatd, subventricosd, 

 olivaceo-virii/i, purpurea trifasciatd, anfractibus in/la- 

 tis, ad peripheriam carina lis, aperturd subampld, colu- 

 mella concavo-impressd, dentatd, livido-purpurascente. 



The toothed Anculotus. Shell ovate, rather ventri- 

 cose, olive-green, encircled with three purple bands, 

 whorls inflated, keeled at the periphery, aperture ra- 

 ther large, columella concavely impressed, toothed, 

 livid-purple. 



Courthouy, Journ. Bost. Soc. Nat. Hist. vol. ii. pi. 4. f. 7. 



Hab. Potomac River, United States. 



A small inflated shell, prominently keeled at the peri- 

 phery, and having a small contorted tooth on the colu- 

 mella. 



Species 37. (Mus. V. d. Busch.) 



Anculotus monodontoides. Anc. testa subglobosd, pur- 

 pureo-nigrd, spird pared, depressd, anfractibus superne 

 convexo-declivibus, delude subangulatis, Icevibus, aper- 

 turd subampld, columella contorto-dentatd. 



The single-toothed Anculotus. Shell subglobose, 

 purple-black, spire small, depressed, whorls convcxly 

 sloping at the upper part, then rather angled, smooth, 

 aperture rather large, columella twistedly toothed. 



Conrad, New Freshwater Shells, p. 02. pi. 8. f. 0. 



Hub. Virginia, United States. 



A smooth, purple-black shell, with the spire much less 

 exserted than in the preceding species, and the last whorl 

 is simply angled, not keeled, at the periphery. 



Species 38. (Mus. Cuming.) 



Anculotus dilatatus. Anc. testa ovato-pyramidali, 

 olivaced, anfractibus superne plano-declivibus, longitu- 

 dinaliter plicalo-striatis, anfractu ultimo suhtus de- 

 presso, aperturd ovatd, columella contorto-dentatd, deule 

 purpurascente. 



The dilated Anculotus. Shell ovately pyramidal, 

 olive, whorls flatly sloping round the upper part, lon- 

 gitudinally plicately striated, last whorl depressed be- 

 neath, aperture ovate, columella twistedly toothed, 

 tooth purple-stained. 



Conrad, New Freshwater Shells, p. 0. pi. 9. f. 5. 



Hub. Virginia, United States. 



The twisted tooth and general pyramidal contour of 

 this shell gives it very much the aspect of an Achatinella. 



Species 39. (Fig. a, b, Mus. Cuming.) 



Anculotus canaliferus. Anc. testa conoideo-turbinatd, 

 fulvo-olivaced, nigricante fasciatd, anfractibus declivi- 

 bus, undique proiuinente carinatis, ultimo subinflato, 

 aperturd ovatd, columella calloso-reflexd. 



The channelled Anculotus. Shell conoidh turbi- 

 nated, fulvous-olive, black-banded, whorls sloping, 

 prominently keeled throughout, last whorl rather in- 

 flated, aperture ovate, columella callously reflected. 



Anthony, Pro. Acad. Nat. Sci. Philadelphia, 1860, p. 68. 



Hab. Dan River, North Carolina, United States. 



A shining fulvous-olive prominently-keeled species, of 

 very conspicuous character. 



Species 40. (Mus. Cuming.) 



Anculotus basalis. Anc. testd ovatd, nigricante-oliva- 

 ced, anfractibus superne concavo-declivibus, ad periphe- 

 riam subcarinatis, aperturd ovatd, fauce purpureo 

 quadrifasciatd, supra el infra sulsinuatd, columella 

 subcallosd. 



The basal Anculotus. Shell ovate, dark-olive, whorls 

 concavely sloping round the upper part, faintly keeled 



April, 1860. 



