144 



Records of the Indian Museum. 



rVoL. XVI 



A large series of specimens was obtained in one of tiie artifi- 

 cial ponds in the old fort on the hill-top immediately above the 

 town of Satara. The bottom of this pond, which is shallow, is 

 rocky but covered with a growth of minute green algae on which 

 the molluscs were apparently feeding. The shells are all small 

 and fragile, of a pale but bright yellowish colour, and with the 

 microscopic sculpture less marked than is usually the case. The 

 Oligochaete worm Chaetogaster was abundant on these molluscs also 



Limnaea pinguis, Dorhn. 

 (Plate V, fig. 4). 



1876. Ltmuaea pinguis. Hanley and Theobald, Conch. Ind., pi. I.\.\ 

 figs. 7, 8, 10. 



Two individuals of this form were found among a large series 

 of L. acuminata from the ponds at Khandalla. The shells of 



Fig. 5. — Genitalia of Limnaea pinguis. Dorhn. 

 Lettering as in figs. 3, 4, pp. 142, 143. 



these two specimens are rather narrow and of small size ; the 

 longitudinal stria,e are very well developed and the shell is very 

 pale in colour. L. pinguis may prove synonymous with L. suc- 

 cinea, Desh. 



The measurements of one of the specimens are as follows : — 



Length . . . . 21 mm. 



Breadth . . . . .11 mm. 



Length of aperture . . . . i2'3 mm. 



Breadth of aperture . . 6"5 mm. 



