64 HELIX §. 11. 



nius subdepressiis, non descendens, basi subplanatus; apertura 

 fere verticalis, depressa, lunaris; perist. simplex, rectum , ad 

 perforationem vix reflexiusculum. — Diam. maj. 8, min. 7, alt. 

 4 mill. (Coll. Nr. 92.) 



Helix Perrotteti Pfr. in Zeitschr. f. Maiak. 1831. p. 13. 



— — Chemn. ed. II. Helix N. 1088. t. 159. f. 41 -44. 

 Habitat in montibus Nilagiricis (Perrottet). 



212. H. nitella Morelet. f 



T. subperforata , convexo-depressa, pellucida, levis, corneo- 

 fulva, unicolor; anfr. 5^2 convexiusculi, ultimus compressus, 

 circa perforationem paululum excavatus; sutura angusle mar- 

 einata ; aperlura obliqua, lunato-ovalis; perist. simplex , acutum. 

 — Diam. 7, alt. 2^2 mill. (M.) 



Helix nitella Morelet iu Guer. Rev. et Mag. Zool. 1851. p. 219. 

 Habitat in insula Mauritii. 



Obs. uH. nitidae affinis; umbiiico lineari praecipue differt. » An 

 eadeni ac praecedens? 



213. H. pinguis Krauss. 



T. perforata, orbiculalo-convexiuscula, tenuis, pellucida, 

 laevigata , nitida, superne fuscidulo-cornea, basi pallidior; spira 

 parum elevata , vertice acutiusculo; anfr. by^ convexi, sensim 

 accrescentes , uUimus basi subplanulatus, medio impressus, an- 

 guste perforatus; apertura vix obliqua, lunaris; perist. simplex, 

 acutum, margine columellari brevissimo, reflexiusculo. — Diam. 

 maj. 8, min. 7, alt. 4 mill. (CoII. Krauss.) 



Helix pinguis Kraiiss siidafr. Moll. p. 75. t. 4. f. 19. 



— — Pfr. in Zeitschr. f. Mal. 18 48. p. 91. 



— — Reeve Conch. ic. N. 200. t. 43. 

 Habitat ad Natal Africae meridionalis (Wahlberg). 



214. H. albicans Pfr. 



T. perforata, depressa, striatula, sublaevigata, nitida, 

 hyalino-albida; spira vix elevata; sutura impressa, marginata; 

 anfr. 5 planiusculi, lente accrescentes, ultimus non descendens, 

 subrotundatus, circa perforationem impressus; apertura verii- 

 calis , late lunaris; perist. simplex, acutum, margine columel- 

 lari brevissime reflexo. — Diam. maj. 8, min. 7, alt. 4 mill. 

 (Mus. Cuming.) 



Helix albicans Pfr. m Proc. Zool. Soc. 1849. p. 127. 



— — Chejnn. ed. II. Hehx N. 777. t. 125. f. 16 — 18. 

 Habitat in insula Jamaica. 



Obs. Superne faciem offert H. rorticis. 



