BIBLIOGRAPHY OF 1875. 203 



Mr. Woods' experience leads him to remark that the fresh- 

 water fauna of Tasmania is perfectly distinct from that of Australia; 

 and that the facies or general character of the freshwater shells is 

 not Australian, showing the remoteness of the period at which 

 the two islands were separated. Another remarkable fact is 

 mentioned by Mr. Woods, namely, that the commonest Physa 

 seems scarcely distinguishable from the Emopea-U P. fonf/na/i's, 

 and it is found in places which preclude the supposition of having 

 been introduced. Nevertheless he describes the shell as new 

 under the name of/', tasmanica. There are in all 32 species (28 

 being univalves) of known freshwater shells in Tasmania, viz. : — 



Ancylus Cumingimius Bourg., A. Tasmanicus, n. sp. (p. 70), 

 Limncp-a Tasmanica^ n. sp. (p. 70), Z. Hjionensis, n. sp. (p. 71), 

 Z. Hoba/ionensis, n. sp. (p. 7r), Z. Laiaicestonensis, n. sp. (p. 71), 

 Physa aperta Sow., P. eburnea Sow., P. mamillata Sow., P. Jiitida 

 Sow., P. Bruniensis Sow., P. Vandtemenensis Sow., P. Huonensis 

 n. sp. (p. 74), P. Legrandi, n. sp. (p. 74), P. Tasmanica, n. sp. 

 (p. 74), P. ciliata, n. sp. (p. 75), P. Tasvianicola, n. sp. (p. 75), 

 P. Hiionkoia, n. sp. (p. 75), Byihmia Leg?-andi, n. sp. (p. 76), 

 B. Pontvillensis, n. sp. (p. 76), B. Dulvertonensis, n. sp. (p. 77), 

 B. Huonensis, n. sp. (p. 77), B. iinicarinata, n. sp. (p. 77), B. 

 Dimrobinensis, n. sp. (]D. 77), B. Tasmanica, n. sp. (p. 77), 

 Pomatiopsis striatula Menke, Assimi^iea Tasmanica, n. sp. (p. 79), 

 Planorbis Tasmanicus, n. sp. (p. 79), Paludestrina Legrandiana 

 Brazier, P. Wisemaniana Brazier, Unio Moretonicus Sow. , Pisidium 

 Tasmanicuin, n. sp. (p. 81), P. Dulvertonensis n. sp. (p. 82) and 

 Cyclas Tasmanica n. sp. (p. 82). 



We have seen examples of Limncea Hobartonensis and regard 

 it as identical with the British L. peregra. Mr. Petterd's article 

 on Tasmanian Freshwater Shells in the present volume of this 

 journal should be referred to for further information. 



