THE LONG- WINGED PEARL MOTH. 141 



insect which may be considered as an excellent 

 type of the entire group. The Moth is repre- 

 sented on Plate X. fig. 5. All these Moths are 

 remarkable from the fact that when at rest their 

 wings form a sort of triangle, of which the apex 

 is at their junction with the thorax. The Moths 

 of the genus Botys have the abdomen rather 

 larger than the wings, and decidedly slender. 



Although the colours of this Moth are very 

 simple, being nothing more than lighter or 

 darker shades of brown, the insect is a very 

 pretty one, on account of the peculiar gloss of its 

 wings, which look almost as if they were made 

 of mother-of-pearl. The dark brown marks upon 

 the wings are more distinct than is the case with 

 the other moths of this genus. 



The larvse are slender, but are thicker in the 

 middle than at the two extremities. When full- 

 fed, they spin for themselves a silken cocoon 

 among leaves. 



Ten species of this genus are known, to exist 

 in England, and all of them have received the 

 name of Pearl Moths, from the peculiar gloss of 

 the wings. Another species, the LONG- WINGED 

 PEARL (Botys lancealis), is shown on Plate X. 

 fig. 17. 



As may be seen by reference to the illustration, 



