BY W. F. PETTERD. 83 



„ 4. Assiminea bicinda, mihi, Eiver Don. 

 „ 5. PotajHopyrgzis (?) Simsofiiatia, Brazier, Brighton. 

 „ &-7. Planorbis Atkinsoni, Jo/mston, South Esk River. 

 „ 8-9. „ Tasmanica, Tenisoii- Woods, Circular Head. 



,, 10. Limnoea Gufmit, mihi, South Esk River. 

 „ 11. ,, Launcestonensis, Tejiisoji- Woods, Waverley. 

 „ 12. „ ,, „ var. papyracea, Tate. 



„ 13. „ siibaquatalis Tate, var. ncglecta, Launceston. 

 „ 14. „ lutosa, mihi, River Jordan. 

 Plate III. 

 Fig. 1. Beddomeia Lodderce, mihi. Castra, River Leven. 



2. PotavwpyrgHS nigra, Qiioyayid Gaitnard, Brown's River 



3. ,, ,, var. Legrandiana, Launceston. 



4. ,, ,, ,, unicarinata, Invemaaj. 



5. „ „ „ Laiuiceston. 



6. „ „ dentition. 



7. „ ,, operculum. 



8. ,, „ animal. 



9. LimiiKa Gtmnii, mihi, Soutli Esk River. 



10. Asseminea Australis, Tate, Kelso, Tamar Heads. 



11. Beddomeia Lattncestonensis, Johnston, var. Tumida, 

 Great Lake. 



12. Lijnnxa Gunfiii, mihi, ajiimal. South Esk River. 



13. „ peregra. Mull., Hobart. 



14. Potamopyrgiis Bro7vnii, mihi, St. Paul's River. 



Plate IV. 

 Fig. 1 and 2. Limnaa siibaquatalis var. neglecta, near 

 Launceston. 

 „ 3. Potamopyrgus Woodsii, dentition. 

 „ 4. Beddomeia Laiaicestonensts, „ 



