3] 



GARDEN FOES. 



between what in Englaml are known respectively as slugs 

 and snails, the former being without visible shells, the 

 latter having shells sufficiently capacious for the animal 

 to retire into. In the si:)ecies under notice the shell is 

 very small, ear-shaped, and situated at the hinder extre- 

 mity of the creature, and covering the pulmonary cavity. 

 The Testacella slugs are subtei-ranean in their habits, and 

 feed on earthworms, which they follow into their holes, 

 their shells protecting their rear from injury. They feed 



TIGER BEETLE (CICIXDELA . CAMPESTRIS). 



during the day, coming from the holes at night in quest 

 of more prey. When the weather is ycvy dry, and during 

 winter, they form a kind of cocoon in the ground by exud- 

 ing a mucus from their bodies, and thus rest secure till 

 a change in weather. Unfortunately, these slugs are not 

 ])lentiful in this country, being almost limited to the 

 southern parts of England. T. haliotoides is the kind 

 ■ most common in this country, and is about three inches 

 long, broadest at the tail end, of a dirty yellow colour, 

 with brown specks ; but is sometimes pale yellow or black. 



