82 PETTERD: on freshwater shells of TASMANIA. 



5. Physa eburnea, Sowerby. Reeve's Con. Icon., pi. xL, 

 figs. Sga-b. 



Habitat — Creeks near Launceston and George Town. 



6. Physa mamillata, Sowerby. Reeve's Con. Icon., pi. xi., 

 fig. 90. 



P. ciliata, Tennison Woods. Pro. Royal Soc. Tas., 1875. 



Habitat — Lake Dulverton; Bruni Island, and Flinder's 

 Island, Bass Straits. A very variable shell both in color, 

 shape, and size. The ciliated appearance is more prominent 

 in immature specimens ; it is a character common to almost 

 all the Tasmanian Fhyscd, as well as many of the Australian, 

 more particularly several species I have collected in Victoria. 

 A large series prove the F. ciliata to be identical with 

 Sowerby's P. mamillaia. 



7. Physa nitida, Sowerby. Reeve'sCon. Icon.,pl. xii.,fig. gSa-b. 



Habitat — In creeks, S.E. Tasmania. 



8. Physa tasmanica, Tennison Woods. Pro. Royal Soc. 

 Tas., 1875. 



P. Legrandi, Tennison Woods. Pro. Royal Soc. Tas., 



1875- 



P. Huonensis, Tennison Woods. Pro. Royal Soc. Tas., 



1875- 



Habitat — Generally distributed in almost every stream. 



An extremely variable species. It may be but a variety of 



the last, which it probably is. 



9. Physa Bruniensis, Sowerby. Reeve's Con. Icon., pi. xii., 

 fig. 92. 



Habitat — Bruni Island. May be but another variety of 

 P. nitida. 

 10. Physa Vandiemenensis, Sowerby. Reeve's Con. Icon., 

 pi. viii., fig. 57. 



Habitat — Near Launceston ; George Town. A very 

 distinct species confined to the northern part of the Island. 



J.C. ii., Mar., 1879 



