238 JOURNAL OF CONCHOLOGY. 



Colonization of Land Shells at Chislehurst. — 



I have introduced specimens of the following into the Chislehurst 

 district, and it may be well to record this, in case anyone should 

 subsequently find them and imagine them to be true natives of 

 the place : — Helix pomatia : four were liberated two years ago, 

 two of which we again found about a month ago. Soon after 

 the finding of these specimens, my brother brought about fifteen 

 specimens from Warlingham and let them go at the same place. 

 H. arbustorum : four or five have been liberated with H. lapicida 

 and a few others, but as they all occur within a few miles of 

 Chislehurst, this is not of much importance. Claiisilia biplicata : 

 several specimens from Brussels were liberated last year. CI. 

 Rolphii : I liberated several young ones from near Dorking and 

 Robertsbridge, and at the same time a few Coch. tridens and 

 Helix sericea, and close by some H. rupestris. H. virgata : a 

 large number from various localities have been let go, but they 

 do not seem to multiply. Cyclostotna elegans : specimens have 

 been let go from various localities. Claiisilia parvula : I have 

 started a colony of this species with a number of specimens from 

 the Rigi, and with them several Picpa secale, and a few young 

 specimens of what appear to be Helix villosa, and also young 

 Pomatias septemspirale and a Hyalina. Helix cartusiana : a 

 large number of Sandwich specimens were liberated last year, 

 but they seem to have died out. — T. D. A. Cockerell, August 

 29th, 1884. 



y.C, iv., Oct., 1884. 



