Vlll CONTENTS. 



CHAPTER IV. 



The London Clay continued — Mud-sliells and Bubble- 

 shells — Ovoviviparous Pond Snails— Freshwater 

 Limpets — Amber Shells — The Needle Agate Shell 

 — Chrysalis and Close Shells 47 



CHAPTER V. 



A Ramble over the Chalk — The Edible Snail — Its sup- 

 posed Introduction by the Romans — Its Curious 

 Epiphragm — Hybernation — Propagation — At- 

 tempted Acclimatisation — Culture of Edible Snails 

 — Snails devoured by Rats — The Heath, Zoned, 

 and Wi'inlded Snails— The Zoned Snail Insecti- 

 vorous — Said to feed on Lady-birds — The Rock 

 Snail — Its supposed Power of Boring — The Kentisli 

 Snail — Its Distribution in England— The Cheese 

 Snail — A Local Species — The Prickly Snail . . 68 



CHAPTER VI. 



The Chalk continued — Gijclostoma elegans — A Buff 

 Variety — Singular Operculum — Snails devoured by 

 Beetles and their Larvae — A Hint to Coleopterists 

 — Epiphragm and Operculum — Difference be- 

 tween — The Close Shells — Clausilia rolpliii — Its 

 Local Distribution — Chrysalis Shells — Whorl Shells 

 — Slugs and Shell-slugs, and their Enemies — Slugs' 

 Eggs Phosphorescent 84 



CONCLUSION. 

 Hints to Colloclors 02 



