ILLUSTRATIONS. 
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I. {Frontispiece.) 
1 & 2. Helix pomatia. — Apple or Vine Snail. 
3 & 4. Helix nemoralis. — Wood Snail. 
5. Helix aspersa. — Common Garden Snail, 
6. Helix Pisana. — Banded Snail. 
II. 1. Cardium edule. — Common Cockle. 
2. Cardium rusticum. — Iled-nose Cockle. 
III. 1. My a truncata. — Gaper. 
2. Solen siliqua. — Pazor-sliell. 
IV. Isocardia Cor. — Heart- shell, or Oxborn Cockl 
V. 1. Mytilus edulis. — Common Mussel. 
2. Ostrea edulis. — Oyster. 
VI. Pinna pectiuata. — Sea-wing. 
VII. 1. Tapes pullastra. — Pallet. 
2. Venus verrucosa. — Warty A-^enus. 
VIII. 1. Psammobia vespertina. — The Setting Sun. 
2. Mactra solida. — Trough-shell. 
IX. 1. Pecten opercularis. — Painted Scallop. 
2. Pecten maximus. — Scallop. 
X. 1. Haliotis tuberculata. — Ormer, or Ear-shell. 
2. Patella vulgata. — Limpet. 
XI. 1. Buccinum undatum. — Whelk. 
2 & 3. Littorina littorea. — Periwinkle. 
XII. Pholas dactylns. — Piddock or Clam. 
