67 



nibus rallo junclis, dex(ro curvato, obsolete unidentato, 

 columellari lato, substricto, ad insertionein bidenticulato. 



Diam, maj. 35, min. 29, alt. 18 mill. 

 Habitat in Andibus Columbiae. 



6. Helix ceylanica Pfr. 



T. perforata, subglobo.<?o-depressa , solidiila, superne 

 distincte granulato-decussala, diaphana, parum nitida, pal- 

 lide rubello-cornea ; anfract. 4V2 parum convexi, ultimus 

 medio fascia albida, utrinque linea rufa marginata (supera 

 interdum deficiente) cinctus; apertiira mediocris, obliqua, 

 rotnndato-lunaris; perist. simplex, rectum, obtusum, mar- 

 gine columellari subincrassato, superne breviter reflexo. 



Diam. maj. 26, min. 21, alt. LS mill. 

 Habitat in insula Ceylon. 



6. Helix Pallasiana Pfr. 



T. umbilicata, depressa, solida, subgranulato-striata, 

 fulvido-albida; spira parum elevata, obtusa: sutura levis, 

 impressa; anfract. ö'/a vix convexiusculi, lente accres- 

 centes, ultimus antice breviter descendens, peripheria acute 

 carinatus, infra carinam rufo-unicingulatus; umbilicus me- 

 diocris, subcylindricus; aperlura obliqua, rotundato-luna- 

 ris; perist. obtusum, marginibus callo junctis, supero 

 breviter expanso, basali & columellari incrassato-reflexis. 



Diam. maj. 43, min. 37, alt. 18 mill. 

 Habitat . . . . ? 



7. Helix clathratula Pfr. 



T. late umbilicata, lenticularis, acute carinata, superne 

 liris elevatis (in quovis anfractu 2) et costis distinctis 

 clathrata, parum niiens, cornea; spira parum elevata, ob- 

 tusiuscula; anfract. 5 subaequales, vix convexiusculi, ul- 

 timus basi radialo-striatus, circa umbilicum subinflatus; 



5* 



