Vlll CONTENTS. 



CHAPTER IV. 



The London Clay continued Mud-shells 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 Wrinkled Snails The Zoned Snail Insecti- 

 vorous Said to feed on Lady-birds The Rock 

 Snail Its supposed Power of Boring The Kentish 

 Snail Its Distribution in England The Cheese 

 Snail A Local Species The Prickly Snail . . 68 



CHAPTER VI. 



The Chalk continued Cyclostoma elegans A Buff 

 Variety Singular Operculum Snails devoured by 

 Beetles aud their Larvas A Hint to Coleopterists 

 Epiphragm and Operculum Difference be- 

 tween The Close Shells Clausilia rolphii Its 

 Local Distribution Chrysalis Shells Whorl Shells 

 Slugs and Shell-slugs, and their Enemies Slugs' 

 Eggs Phosphorescent 84 



CONCLUSION. 

 Hints to Collectors .... 92 



