WOOD LEOPARD. 215 



which are pierced by this larva bear even more abun- 

 dantly than those which are untouched by it. 



The perfect insect appears in the middle of 

 summer, and is a common insect, though it will 

 seldom be found except by persons who know where 

 and when to look for it. The female mostly remains 

 near the tree in which she was bred, and may be 

 found at night clinging to the trunk, where she can 

 be detected by the aid of a lantern. The male is 

 much bolder, and flies abroad in search of his mate. 

 He is one of the many Moths that fly towards a 

 light, and can often be taken by the simple process of 

 putting a lamp near an open window. Many entomo- 

 logists have made quite valuable collections of insects 

 by this simple plan. 



There is a peculiarity in the structure of the chry- 

 salis of this and other Moths of the family. Each 

 segment is furnished on its edges with a row of little 

 hooks by means of which it can traverse its tunnel 

 nearly as fast as it could while in the caterpillar 

 state. As the pupae of the Lepidoptera generally 

 are quiescent, and few can do more than jerk the tail 

 from side to side when irritated, it is rather startling 

 to see a chrysalis wriggle itself up and down the 

 burrow which it has made while in the caterpillar state. 



\YE now come to the GOAT MOTH (Cossus ligni- 

 perda], so-called on account of the very strong odour 

 which is given out by the larva, and bears some resem- 

 blance to the powerful scent of the he-goat. A figure 

 of this insect will be found on page 216. 



The colour of this Moth is nothing more than 



