PULMONATA. 



87 



38. Nanina anceps. 



Shell scarcely perforated, lenticular, pale homy, acutely keeled, 

 striated above, shining beneath ; whorls six, very slightly convex, 

 the last more convex beneath, smooth, marked below the com- 

 pressed, slightly prominent keel with a few impressed concentric 

 lines ; aperture angularly lunar ; peristome simjile, thin, colu- 

 mellar margin very slightly reflected. Lat. maj. 17, min. 16, 

 alt. 9 mill. 



Caracolla anceps, Gould in Bost. Journ. iv. 4. 454. t. 24. f. 4. 

 Helix anceps, Chemn. ed. 2, Helix, n. 551. t. 88. f. 8-10. 



Pfr. Mon. Helic. i. 80; Ic. ii. 126. 



Reeve, n. 155. t. 35. 

 Helix (Thea) anceps, Alh. 118. 



Helix serrula, Benson ?, fide Mason in Journ. As. Soc. xvii. 

 Hab. Tavoy, Birman Empire. 



39. Nanina indica. 



Shell perforated, orbiculate-convex, rather solid, closely costu- 

 late-striated above, granulately decussated with close impressed 

 lines, entirely fulvous ; whorls five and a half, nearly level, the 

 last more convex beneath, smooth, marked beneath the keel with 

 a few impressed concentric lines ; aperture angularly-lunar ; 

 peristome straight, white, columellar margin slightly thickened, 

 rather reflected above. Lat. maj. 22, min. 19, alt. 11 mill. 



Helix indica, Pfr. Symb. iii. 66 ; Mon. Helic. i. 80. 



Reeve, u. 448. t. S3. 

 Hab. E. Indies; Nilagiric Mountains. 



40. Nanina acuducta. 



Shell perforate, thin, lenticular, conic, sharply keeled, with 

 riblike strife above, which are very closely decussated and gra- 

 nulated by impressed lines ; spire scarcely raised ; apex rather 

 blunt ; whorls five, flattened, nearly contabulate, the last ventri- 

 cose and smooth beneath, marked with numerous impressed 

 spiral lines ; keel compressed beneath ; aperture lunate, angled, 

 nearly axe-shaped ; peristome thin, simple, columellar margin 

 veiT shortly reflected above. Height 11, greatest breadth 22, 

 least breadth 19 mill. {Bens.) 



Helix acuducta, Benson in Ann. ^ Mag. N. H. 1850, March, 214. 



Reeve, n. 739. t. 124. 



Pfr. Mon. Suppl. 7^- 

 Hab. Neilgherries Mountains, South India (Jcrdon). 



