PULMONATA. 



141 



Helix induta, Pfr.Proc.Zool. Soc. 1845, p. 128 ; Mon. Helic.i. 79. 

 Hab. ? 



187. Nanina atomata. 



Shell oiliiculate, slightly convex, beneath convex, perforated, 

 striated, whitish, stained with brown ; lowest whorl keeled, with 

 unequal black-brown spots on the upper surface ; aperture semi- 

 ovate-squarish. Alt. 1^, lat. 2i liu. 



CarocoUa atomata, Menke, Synojjs. p. 76 ; ed. 2. p. 128. 

 Helix atomata, Pfr. Mon. Helic. i. 82 ; Ic. n. 760. 1. 123. f. 19-21. 

 Helix cheiranthicola, Lowe ? {Beck). 

 Hab. ? 



188. Nanina variolosa. 



Shell perforated, depressed, acutely keeled, rather solid, opake, 

 lutescent, very closely plaited above, and regularly decussated 

 with concentric hnes,"covered subfasciately with white pustules ; 

 spire nearly level ; whorls three and a half, very slightly convex, 

 rapidly increasing, the last convex beneath, impressed below the 

 keel ; columella short, vertical ; aperture widely hatchet-shaped ; 

 peristome simple, acute, columellar margin slightly reflected, 

 nearly hiding the perforation. Lat. maj. 23, miu. 20, alt. 10 

 mill. 

 Hehx variolosa, Pfr. Proc. Zool. Soc. 1845, p. 128 ; Mon. Helic. 



i. 83; Ic. n. 1064. t. 157. f. 7,8. 

 Hab. ? 



189. Nanina problematica. 



Shell convex-depressed, thin, faintly striated, shining, pellucid, 

 pale gold-yellow ; spire convex, with the a])ex rather jjrominent, 

 blunt ; suture slightly bordered ; whorls four and a half, mode- 

 rately conxex, enlarging rapidly, the last not descending, shghtly 

 angled below the middle, rather flat beneath ; umbilicus middle- 

 sized, conic ; aperture oblique, rather trapezoidal ; peristome 

 simple, straight, columellar margin shortly expanded, sometimes 

 perfectly covering the umbilicus by a dilated lamina. Height 4, 

 greatest breadth 8, least breadth 6^ mill. (Pfr.) 

 Hehx problematica, Pfr. in Z. f. M. 1852, p. 91 ; Ic. n. 1062. 



t. 157. f. 3, 4 ; Mon. Suppl. 87. 

 Locality unknown. 



It is not certain that this singular shell is a full-grown form 

 of Helix ; perhaps it may be the young state of some other 

 genus. 



