CHAPTER VI. 



The Chalk continued — Cyclostoma, elegans — Close Shells — Clausilia 

 rolphii, its local distribution — Chrysalis Shells — Whorl Shells — 

 Slugs and Shell-slugs. 



Theke are but few species to add to the list of 

 mollusca inhabiting the chalk. Owing to their minute 

 size, some of them are very difficult to procure ; 

 and perhaps the readiest way to obtain specimens 

 is to take out a few small linen bags and an old 

 newspaper, and in dry weather to pull up moss, grass, 

 &c., and shake out the sand and earth from the 

 roots on to the paper. This may then be put into 

 a bag with a memorandum of the locality whence 

 taken, and, being carefully tied up, may be carried 

 home and examined at leisure. In this way have 

 been obtained Zonites crystallinus, Helix pygnum 

 and aculeata, Acme lineata, and different species of 

 Vertigo, which otherwise might never have been 

 procured. 



Helix pygmcea (PL IX., fig. 11) has been also 

 taken successfully, and in some numbers, by sweep- 

 ing the wet grass and herbage after rain with an 

 entomologist's gauze net; and Dr. Turton found 



