PLATE V. 



FIG. 



1. Helix pomatia . 



2. Helix cornea 1 



3. Helix stag nalis 2 . 



4. Nerita peloronta 



5. Nerita corona? 



6. Haliotis tuberculata 



7. Patella equestri^ . 



8. Patella nodosa b . 



Eatable Snail. 

 Horn Snail. 

 Lake Snail. 

 Bleeding Tooth. 

 Coronated Nerite. 

 Common Sea-ear. 

 Cup and Saucer. 

 Limpet. 

 Knotted Limpet. 



1 Planorbis corpus of Lamarck. 



2 Hymnaea stagnalis ditto. 



3 Neritina corona ditto. 



4 Calyptraea equestris ditto. 



5 Fissurella nodosa ditto. 



