22 WOOD LEOPARD MOTH. 



sexes, the antennae of the former being without 

 the feather-like appendages at the base. 



The larva of the Leopard Moth, like that of 

 the preceding insect, is a wood-borer, and often 

 does considerable damage to the pears, apples, 

 chesnuts, and walnuts, not to mention the elm, 

 ash, and other forest trees, the oak being appa- 

 rently too hard for its jaws. 



When it is about to make its way out of the 

 branches in which it has been feeding, it changes 

 the course of its burrow, eats away the wood 

 close to the surface of the bark, and then 

 spins a cocoon made of wood-chips, in which 

 it remains until the time for its entrance into 

 the world. 



The insect is shown in Plate II. fig. 1, and 

 the form of its burrow is seen in the illustra- 

 tion marked L, fig. 3. 



The largest and most destructive of the wood- 

 boring Moths is shown in Plate II. fig. 2. It 

 is popularly called the Goat Moth (Gossus ligni- 

 perda), because the larva exudes a powerful odour 

 which has been compared to that of the he-goat. 

 The odour in question is not only powerful, but 

 enduring. It is possible to detect the hidden 

 habitations of the Goat Moth and caterpillar by 



