PULMONATA. 115 



Helix nemorensis, Mi'iU. Verm. ii. ind. 



Fe'r. Pr. 232 (Helicella). 



Chemn. ed. 2, Helix, n. 183. t. 35. f. 9-11. 



Pfr. Mon. Helic. i. 46; Ic. i. 215. 



Reeve, n. 474. t. 88. 

 Nanina nemorensis, Gray in Proc. Zool. Soc. 1834, p. 59. 



Beck, Ind. 4. 

 Nanina (Xesta) nemorensis. Alb. 59. 

 Var. Helix sulphurea, Reeve, Conch. Icon. n. 476. t. 88. 

 Helix nemoralis, Mull. Verm. ii. 62. n. 257. 

 Helix cretacea. Born, Mus. 376. t. 16. f. 1, 2. 



aemw. ix.pt.2. 1 19. 1. 129. f. 1146, 1147. 

 Helix Neuvardii, De Haan {Menke, Syn.). 



Hab. Moluccas; New Ireland. 



114. Nanina trochus. 



Shell perforate, conic, trochiforra, rather solid, minutely stri- 

 ated, scarcely shining, white, with a single broad brown band, or 

 several naiTow ones, which sometimes are confluent, at the peri- 

 phery ; spire conic ; apex white, rather blunt ; whorls six, mo- 

 derately convex, the last not descending, rounded at its peri- 

 phery, rather flattened beneath ; aperture oblique, roundish- 

 lunate, uniformly milk-white within ; peristome sim])le, straight, 

 columellar margin declivous, somewhat thickened and reflected 

 into a very small convex lamina near the open perforation. 

 Height nearly 20, greatest breadth 25, least breadth 22 mill. (Pfr.) 



Helix trochus, Midler, Pfr. Mon. i. 46. n. 82; Z. f. M. 1851. 

 p. 10; Ic. i. 160. t. 146. f. 3-5; Mon. Suppl. 46. 

 Reeve, u. 475. t. 88. 

 Hab. Moluccas. 



115. Nanina Steursii. 



Shell perforate, depressedly turbinate, closely decussated with 

 irregular striae and impressed spiral lines, not shining, pale yel- 

 lowish, with a blackish-purple band above and a broad whitish 

 band below the periphery ; spire rather pointed ; whorls five, 

 enlarging gradually, scarcely convex, the last rather flattened 

 beneath, marked near the perforation, with a fuscous- purple area ; 

 apertm-e oblique, lunate ; peristome simple, sharp, with the colu- 

 mellar margin imperceptibly (hlated and reflexed. Height 14, 

 greatest breadth 23, least breadth 19 mill. [Sh.) 



Nanina Steursii, Shuttlewortli in Bern. Mitth. Aug. 1852, p. 194. 

 Hehx Steursii, Pfr. Mon. Suppl. 627. 

 Hab. Amboina(F. Steurs). 



