96 PETTERD : ON COLONISING LAND SHELLS. 



the genus. Albers classes it (from the shell only) with the New 

 Zealand H. Busbyi and Victorian H. atraj?ientaria under the 

 subgenus Paryphanta, perhaps it may turn out to be something 

 between Helix and Vitrma. 



I tried unsuccessfully to procure specimens of Gundlachia 

 from Cuba and California, both of which places have credit for 

 this genus. I little thought to find it so near home. An un- 

 doubted one has been discovered near Launceston by Mr. W. F. 

 Petterd. 



We have several Bythinellas, one of which, B. Huonensis, 

 Mr, Woods has made the type of a new sub-genus Tatea. 



I may possibly make some of our marine species the subject 

 of another paper. 



January^ iSyg. 



-^♦Oo^— 



COLONISING LAND SHELLS. 

 By W. F. petterd. 



The following species of Land and Freshwater Shells have 

 been introduced into Australia, and are now thoroughly acclima- 

 tised. Possibly other species have been imported that I have not 

 met with. 



1. Helix aspersa. In great abundance around the suburbs of 



Melbourne, Victoria. Mr. J. S. Gibbons (' Quarterly Journal 

 of Conchology,' August, 1878) records its introduction in 

 Brazil, St. Helena, and the Cape of Good Hope. My friend 

 Mr. C. E. Beddome has recently placed some living speci- 

 mens in the Scrub, near Hobart Town, so that in a few years it 

 may be equally as abundant in this island as on the mainland. 



2. Helix cellaria. In great profusion in the streets, cellars, 



and such like places in Launceston and Hobart Town, Tas- 

 mania; also Auckland, New Zealand, and Sydney, Australia. 



J.C, ii.. Mar., 1870 



