92 HELICID^. 



5. C. PAEVULA (small). 



This shell differs from 0. rugosa " in being smaller and 

 quite smooth, with the exception of some very faint trans- 

 verse lines, which are only observable with a lens, or of a 

 few striae near the mouth." 



Specimens of this species, which is fairly common 

 on the Continent, have been found near Stourbridge. 



C. SOLID A (solid). 



As only a single specimen of this Continental species 

 has been found near some nursery gardens at Staple- 

 ton, near Bristol, whither it was doubtless brought 

 with foreign plants, I think its claim to rank as British 

 may be disregarded. Had it, like T. Maugei, " bred 

 and multiplied," it might be viewed in a different 

 light. 



Genus X. CoCHLiCGPA. 



1. C. TRIDENS (with three teeth). 



Chrysalis-shaped, semi-transparent, solid, glossy, yellow- 

 ish horn- col our, sometimes tinged with red or green ; 

 whorls seven ; spire pointed ; mouth narrow, with three 

 denticles. 



This shell is only found in England, where it is 

 widely distributed, but local. It is gregarious, and 

 frequents damp moss in shady spots. 



