80 fulmonata. 



18. Nanina infula. 



Shell subpcrforate, trochiform, thin, pellucid, whitish horn- 

 coloured, with the upper surface little shining, slightly striate 

 and girdled with elevated, concentric, somewhat distant lines ; 

 spire conic, w ith the apex rather pointed ; whorls six, moderately 

 convex, the last one keeled, more shining and nearly smooth 

 beneath ; aperture rather oblique, transversely square, lunate ; 

 peristome simjde, sharp, straight; columellar margin nearly j)cr- 

 pendicular, a little dilated and very shortly reflected above. 

 Height 7, greatest breadth 8, least breadth 7i mill. {Pfr.) 



Helix infula, Benson, in Ann. Sf Mag. N. H. 2nd ser. ii. 160. 

 Pfr. Ic. n.804. t. 12?. f. 24, 25; 3Ion. Suppl. 58. 

 Reeve, n. 783. t. 129. 

 Helix turbiniformis, Benson, in Journ. As. Soc. (olim). 

 Hab. From the vicinity of the town of Murshedabad, Bengal, 

 and of the Hill of Patharghata in the province of Bahar, 

 India. 



19. Nanina Barrakporensis. 



Shell subpcrforate, raised-trochiforra, thin, faintly striated, 

 shining, pellucid, brownish horn-coloured; s]nre conic, rather 

 acuminate ; suture deep ; whorls six, convex, enlarging gradually, 

 the last keeled, not descending, rather convex beneath ; aperture 

 scarcely oblique, depressed, lunate, somewhat angular ; peristome 

 simple, thin, straight ; columellar margin short, a little reflected 

 near the punctiform perforation. Height 3|, breadth 3| mill. 

 (Pfr.) 

 Helix Barrakporensis, Pfr. in Proc. Zool. Soc. 1851, p. ; Ic. 



n. 969. t. 147. f. 20-22; Man. Suppl. 59. 

 Reeve, n. 816. t. 132. 



Hab. Barrakpore, India {Bacon), 



20. Nanina semifusca. 



Shell orbiculate, depressed, thin, fi-agile, horny, smooth, slightly 

 angulated at the margin, perforated beneath; aperture ovate 

 semilunar, margins very thin, acute ; whorls narrow, slightly 

 convex. L^it. maj. 18, min. 15, alt. 9 mill. 



Helix semifusca. Desk, in Belanger, Voy. Zool. p. 414. t. 1. 

 f. 8-10. 



Pfr. Mon. Ilelic. i. 54. 

 Hab. Pondichcrry. 



