86 LEPIDOPTERA. 



bark, placed on the surface, or in a chink, of the bark of the 

 tree upon which the larva has fed ; but so accurately 

 resembling its surroundings that it can very rarely be 

 discriminated from the bark. In pupa through the winter. 



The moth sits upon the trunks of birches or alders in the 

 daytime ; but flies at night, and has been known to come to 

 the attraction of a strong light. Very little, however, is known 

 of its habits, and probably hardly a specimen has been taken 

 on the wing here. Always a rarity, its most favourite resort 

 in the South of England being Tilgate Forest in Sussex. 

 Four or five specimens are recorded as having been taken in 

 Devon, one in Oxfordshire, two near Leominster, Hereford- 

 shire, one in Carmarthenshire, two in Norfolk, and one or two 

 in Suffolk. In the Northern Midlands it seems to be more 

 frequent, having been obtained repeatedly in boggy heaths 

 among alder in North Staffordshire and on the borders of 

 Derbyshire, and more rarely among the hills of Cannock 

 Chase, but its principal northern haunt is round Preston, 

 Lancashire, where the first British specimen was obtained in 

 the year 1847. It extends to several other localities, mainly 

 in mosses, in Lancashire, and to York, Scarborough, Ripon, 

 Guisboro' and elsewhere in Yorkshire ; and two or three 

 specimens appear to have been obtained in Cumberland. In 

 all localities in which it has been found the collector appears 

 to be bitterly tantalised by the easy discovery of emjpty 

 cocoons, while full ones seem almost undiscoverable. I know 

 of no captures of this species in Scotland or Ireland. Abroad, 

 though not usually in any abundance, it is found in Belgium, 

 Eastern France, Switzerland, Germany, South Sweden, 

 Fiuland, and Central Russia. Also probably in North 

 America, but bearing the name of borealis, Bdv. 



2. C. furcula, Z.— Expanse 1 to li inch. Fore wings 

 narrow, with rounded apex ; pale grey and white, with a 

 broad purplish-grey central band, edged on both sides with 

 black ; outer side indented. 



