ANCULOTUS. 



Plate VI. 



Species 44. (Mus. Anthony.) 



Anculotus sulcosus. Anc. testa ovatd, tenuiculd, in- 

 Jtald, sordide fulva, spird brevissimd, plana, anfracti- 

 bus spiraliter carinatis, carinis piramplis, rotundatis, 

 distantibus, interstitiis late excavatis ; aperturd ovatd, 

 ampld, patuld, columella brevi. 



The grooved Anculotus. Shell ovate, rather thin, in- 

 flated, dirty-fulvous, spire very short, flat, whorls 

 spirally keeled, keels very large, rounded, distant, 

 with the interstices broadly excavated ; aperture ovate, 

 large, wide, open, columella short. 



Anthony, MS. 



Hab. Alabama, United States. 



A very remarkable Purpura-shaped species, composed 

 of largely-defined winding keel-like ribs, broadly excavated 

 in the interstices. 



Species 45. (Mus. Anthony.) 



Anculotus pumilus. Anc. lestd subglobosd, Naticrr- 



formi, virente-nigrd, spird parvd, anfractibus convexis, 



lavibus ; aperturd lunari-ovatd. 

 The dwarf Anculotus. Shell subglobose, Natica- 



shaped, greenish-black, spire small, whorls convex, 



smooth ; aperture lunar-ovate. 

 Conrad, Freshwater Shells. 

 Hab. Alabama, United States. 



A small, smooth, Natica-s\mpi-d species, of rather solid 

 growth. 



Species 46. (Mus. Anthony.) 



Anculotus Nuttalti. Anc. testa globosd, olivaced, spird ', 



parvd, anfractibus rotundatis, subinflatis, Uevibus ,• 



aperturd lunari-orbiculari. 

 Nuttal's Anculotus. Shell globose, olive, spire small, 



whorls rounded, a little inflated, smooth ; aperture 



lunar-orbicular. 

 Lea, MS. in Mus. Anthony. 

 Anculotus fuscus, Haldeman. 

 Hab. Oregon, North America. 



A rather larger species than the preceding, distinguished 

 by a more rotundately inflated form. 



Species 47. (Mus. Anthony.) 



Anculotus rubiginosus. Anc. testa pyramidali-conoided, 

 brevi, crassd, ferrugineo-fusca, anfractibus declivibus, 

 spiraliter multiUratis, liris obtusis, irregular ibus, iu- 

 terdumfere obsoletis ; aperturd lunari-orbiculari. 



The rusty Anculotus. Shell pyramidally conoid, short, 

 thick, rust-brown, whorls sloping, spirally many- 

 ridged, ridges obtuse, irregular, sometimes nearly 

 obsolete ; aperture lunar-orbicular. 



Lea, Trans. Amer. Phil. Soc. vol. ix. p. 20. 



Hab. Alabama, United States. 



This, and not the shell given at Plate II. Fig. 12, is 

 the true A. rubiginosus. It is of a uniform fulvous-brown 

 colour, without bands, encircled with irregular close-set 

 ridges, which are sometimes obsolete. 



Species 48. (Mus. Anthony.) 



Anculotus Melanoides. Anc. testa conico-ovald, oli- 

 vaced, nitente, anfractibus declivi-convexis, ultimo 

 medio obtuse angulato, lavibus vet longitudinaliter pli- 

 cato-striatis ; aperturd ovatd. 



The Melania-like Anculotus. Shell conically ovate, 

 olive, shining, whorls slopingly convex, the last ob- 

 tusely angled round the middle, smooth, or longitu- 

 dinally plicately striated ; aperture ovate. 



Conrad, Freshwater Shells. 



Hab. Alabama, United States. 



A shell of very simple character, intermediate in form 



between Helania and Anculotus. 



Species 49. (Mus. Anthony.) 



Anculotus elegans. Anc. testa subglobosd, subinfiatd, 

 flavescente-olivaced,fasciis virente-nigris i/uatuor regu- 

 laribus distantibus cingulaid, spird parvd, anfractibus 

 convexis, Irpvibus ; aperturd ovatd, ampld, patuld. 



The elegant Anculotus. Shell subglobose, rather in- 

 flated, yellowish-olive, encircled with four regular, 

 distant, greenish-black bands, spire small, whorls 

 convex, smooth ; aperture ovate, large, open. 



Anthony, Pro. Acad. Nat. Sci. Philadelphia, 1860, p. 69. 



Hab. Alabama, United States. 



An elegantly-painted semitransparent inflated species. 



April, 1861. 



