90 
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. 
Opercvlum as in Pal. chilinoides, Reeve. 
Hab. Balcaddua Pass, mountain torrent, affecting the little pools 
and not found in the rapids. 
PaLupomus 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 2 
situ. Mus. Cuming et Layard. 
PaLupomus sBicinctTus, Reeve. 
Operculum as in Pal. chilinoides, Reeve. 
Hab. Balcaddua Pass, in the Mahavillaganga, 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. Mus. Layard. 
PALUDOMUS PALUDINOIDES, Reeve. 
Operculum as in Pal. chilinoides, Reeve. 
Hab. Ganges. Mus. Cuming et Layard. 
PaLUDOMUS DeEcussATUS, Reeve. 
Operculum as in Pal. chilinoides. 
Hab. Balcaddua Pass, mountain torrent, in company with Pal. ni- 
gricans, Reeve. Mus. Cuming et Layard. 
Patupomus parvus, Layard. 
Shell ovate ; axis 6 lines, diam. 4 lines; spire exserted, moderately 
Jong; 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. 
Iam not quite satisfied that the opercula 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. 
