27 



REMARKS ON SPECIES ALREADY DESCRIBED, AS REGARDS 

 DISTRIBUTION, ETC. 



AnCYLUS CTOnNGIANUS. 



,, tasmanicus Ten. -Woods 



-D „ j Not seen in the northern part 

 *=' I of Tasmania. 



Lymnea 



Physa 



tasmanica 

 huonensis 



Hobartonensis 

 Launcestonensis 



do. 

 do. 



do. 

 do. 



sp. 



aperta 



ebiirnea 



maniillata 

 ciliata 



nitida 



Bruniensis 



do. 



do. 



Sowerby 



do. J 

 Ten. -Woods 1 



i Pale horn variety. 1st Basin, 

 I Launceston. 



Not seen in the North. 



Ditto ditto 

 f Both abundant near Launceston. 

 I They are very variable in size 

 I and shape, and run into each 

 i other. I think they are 

 I merely varieties of the same 

 |_^ species. 



( Fossil. Badger Island. Too 

 ) imperfect for description. 



Not seen in the North, 

 j Invariably ciliated in all the 

 I creeks when fresh, common, 

 f These I believe to be varieties 

 I of the same species. Inter- 

 mediate varieties occur in 

 Little Hampton Lagoon, fre- 

 1^ quently ciliated. 

 ( Varieties occur in the creeks 

 } about Launceston, closely 

 ^ approaching the description 

 ( given. 



Not seen in the North. 



Common, 1st Basin, Launceston, 

 ciliated, 3 rows on crown in 

 young state. 



Not seen in the North. 

 C Abundant in all creeks in the 

 < north. Yery variable in size, 

 ( shape, and color. 



Doubtful. 



Ditto. 



With respect to the Tasmanian genus it is interesting to 

 notice that P. tasmanica, when examined by me, showed a 

 most peculiar arrangement of the lingual teeth. The medials 

 are 2-cuspid, the laterals 4-, 5-, and 6-cuspid ; the extreme 

 ones having a resemblance to the closed digits of the ho.nd. 



BiTHYNELLA. 



There is some confusion with respect to the shells classed 

 under Paludestrina, by Brazier, and under B'dliynella, by the 

 Eev. J. E. Tenison- Woods. The latter classifies them under 



Sowerby 



do. 



