LAPPET-MOTH. 205 



It feeds on a variety of trees and shrubs, such as 

 the willow, blackthorn, bramble, hawthorn, &c., 

 and it is asserted that the colour varies according to 

 the nature of its food. The cocoon which it spins 

 for its pupal change is long, and generally tapers 

 somewhat at one end. The tissue is not very thick 

 or compact, but all the interstices are closely filled 

 up with a whitish powder, employed for lining the 

 interior. The moth is found occasionally in many 

 parts of England but seldom in great abundance. 

 It is not rare on the continent. 



BLACK ARCHES. 



Psilura Monacha. 

 PLATE XIX. Figs. 1 and 2. 



Phal. Bomb. Monacha, Linn. ; Don. vii. PI. 228 Liparis 



Monacha, Ocksenheimer. Laria Monacha, Shrank, Leach. 



Black Arches, Wilkes, PL 39 ; Harris' Vade Mecum, 9 



Psilura Monacha, Steph. 



THIS genus was established by Mr. Stephens, and 

 may be recognised by the following characters: 

 maxillae obsolete ; palpi with the second joint cla- 

 vate, and one-half longer than the radical one, 

 which is likewise somewhat lengthened and club- 

 shaped; antennae short, deeply bipectinated in the 

 male, but less so in the female ; wings opaque and 

 densely covered with scales, the edges entire ; body 



