136 Zoological Society : — 



Operculum nearly oval, the apex slightly inclined to the left ; con- 

 centric nucleus subcentral, sinistral. 



Hab. The grassy margins of a tank at Anarajahpoora. Mus. 

 Cuming et Layard. 



Paludomus nigricans. Reeve. 

 Operculum as in Pal. chilinoides, Reeve. 



Hab. Balcaddua Pass, mountain torrent, affecting the little pools 

 and not found in the rapids. 



Paludomus constrictus, Reeve. 



Operculum as in Pal. chilinoides. Reeve, but with the apex very 

 much inclined to the left. 



Hab. Kadaganava Pass, mountain streams. I have not taken it in 

 situ. Mus. Cuming et Layard. 



Paludomus bicinctus. Reeve. 

 Operculum as in Pal. chilinoides, Reeve. 



Hub. Balcaddua Pass, in the jSIahavillaganga, shallow quiet places 

 on sand. Mus. Cuming et Layard. 



Paludomus phasianinus, Reeve. 



Operculum as in Pal. chilinoides, Reeve. 



I cannot help thinking that this is but a geographical variety of 

 Pal. chilinoides, of which the Ceylon race will be the connecting link. 

 Seychelles type. Mus. Cuming. Ceylon var. ^lus. Layard. 



Paludomus paludinoides. Reeve. 

 Operculum as in Pal. chilinoides. Reeve. 

 Hab. Ganges. Mus. Cuming et Layard. 



Paludomus decussatus, Reeve. 

 Operculum as in Pal. chilinoides. 



Hab. Balcaddua Pass, mountain torrent, in company with Pa/, ni- 

 gricans, Reeve. Mus. Cuming et Layard. 



Paludomus parvus, Layard. 



Shell ovate ; axis 6 lines, diam. 4 lines ; spire exserted, moderately 

 long; whorls slightly rounded, smooth. Colour dark olive-yellow 

 more or less marked with fine spiral brown lines ; aperture white. 



Operculum as in P. chilinoides. Reeve. 



Hab. Bombay. Mus. Cuming et Layard. 



Paludomus globulosus. Reeve. 



I am not quite satisfied that the ojiercida which I received with the 

 specimens of this shell presented to me, are really the proper oper- 

 cula of the species, but it probably belongs to this group. 



I was told that the shells came from Rambodde Pass, between 

 Newera Elia and Kandy, but never saw it in situ, as I did not visit 

 that locality. Mus. Layard et Cuming. 



