Notes on South African Non-marine Molln*<-. 187 



spersed with patches of cultivation, in common with tho introduced 

 P. orcida, K. sigitrensis, and L. truncatula, as well as the endemic 

 Trachycystis hottentota M. & P. ; but in the Cape Peninsula, while 

 hottentota inhabits the little piece of apparently original jungle in the 

 Admiralty Ravine, Simoustown, excentrica has not spread beyond 

 gardens in Cape Town and Wynberg. 



Its other localities are Somerset East, Grahamstown, Kingwilliams- 

 town. and Port Elizabeth in the Cape Province, and Pietermaritzburg 

 in Natal. 



HELIX ASPERSA M filler. 



The late Lord de Villiers informed me that he remembered this 

 species being first brought to Cape Town by Mous. Dastre for eating- 

 purposes about 1870. The rapidity with which it adapted itself to its 

 new surroundings is evinced by the fact that it was one of the only 

 three land-molluscs collected in that neighbourhood by the members 

 of the " Challenger " Expedition iu 1873, while Gibbons wrote in 1878 

 that he had never seen the species so plentiful as it then was in 

 the neighbourhood of Cape Town. 



Outside the Cape Peninsula and Robbeu Island H. aspersa is only 

 known from Port Elizabeth, where Mr. Farquhar found it not un- 

 common as long ago as 1882, and from Kimberley, where Miss Wilmau 

 informs me that it made its first appearance in gardens in 1915. 



HELIX FAUX-NIGRA Chemnitz. 



Pallary* has shown that Mailer's original description of Helix 

 lactea cannot possibly be applied to the well-known Mediterranean 

 species, which must pass in future under the hideous, though appro- 

 priate, name faux-nigra of Chemnitz. 



Two examples of this species were found by Mrs. Barber in 1897 in 

 a garden on the bank of the Kowie River, where it does not appear to 

 have perpetuated itself. The erroneous record of Pondoland in Melvill 

 and Ponsonby's Check-list refers to this occasion. 



As the shells are no longer in existence it may be worth remarking 

 that they were of the dark, bandless variety, such as is frequent 

 at Teneriffe, a port of call for nearly half the traffic between Europe 

 and the Cape. 



HELIX PISANA Mailer. 



This species was first noticed by W. G. Fail-bridge in 1881 on what 

 was then Gallows Hill, but now forms part of Cape Town Docks. 

 * Nachrichtsbl. d. D. mal. Ges. 1911, p. 8. 



