REFERENCE TO PLATES. 



125 



VII. 



1. Helix rupestris. 



2. 



3. pulchella. 



4. ,, lapicida. 



5. ,, obvoluta. 



6. villosa. 



7. Bulimus acutus. 



8. 

 9. 



10. Pupa secale. 



11. ,, ringens. 



montanus. 

 obscurus. 



VIII. 



1. Clausilia rugosa. 



2. Rolphii. 



3. laminata. 



4. biplicata. 



5. Balia perversa. 



6. Cochlicopa Inbrica. 



7. Cochlicopa tridens. 



8. Achatina acicula. 



9. Carychmm minimum. 



10. Cyclostoma elegans. 



11. Acme lineata. 



IX. 



Plate explaining the technical names for the different parts 

 of a bivalve and a univalve shell. 



CHISWICK PRESS : C. WHITTINGHAM AND CO., TOOKS COURT, 

 CHANCERY LANE. 



