4 LIVEEPOOL BIOLOGICAL SOCIETY. 



Clausilia nigricans, Mat. and Rack. 

 Very common, and the specimens large. 



Zua lubrica, Miill. 



Only one specimen, fomid by Mr. Gregory ; no doubt 

 there are more, but so far they have escaped notice. 



PNEUMONOCHLAMYDA. 

 Family: CYCLOSTOMATiDiE. 



Cyclostoma elegans, Miill. 



This beautiful shell was found to be fairly common on 

 the Great Orme's Head, and so far as I have read I have 

 not noticed it recorded as having been found previously in 

 this district. 



