BOARMIDJL-NYSSIA. 141 



apterous, very hairy ; autennas simple, but thickly ciliated ; 

 head and thorax black-brown, covered with raised loose 

 scales, and the latter sint^'ularly ridged at the back; abdomen 

 thick, rather tapering, rough, reddish-black or greenish- 

 black, suddenly becoming more smooth and tapering toward 

 the anal extremity ; legs long, tibito covered sparsely with 

 black-brown hairs ; tarsi dark brown. 



Underside of the fore wiugs of the male pale smoky-grey, 

 mottled with gi-eyish-white ; costa dotted with black and 

 having a large black cloudy spot beyond the middle, and 

 a brown cloud close to the apex ; hind wings white, dusted 

 with brown ; a large black spot on the middle of the costal 

 margin originates a sort of transverse cloudy stripe, in the 

 middle of which is another black spot. Body excessively 

 hairy, red-brown ; leg tufts very thick, rather paler ; tarsi 

 black. 



There is considerable diversity in the degree of brown- 

 black clouding in the middle area of the fore wings of the 

 male ; often it fills and blackens all that portion, either 

 forming a dark central band, or totally obscuring the trans- 

 verse lines ; specimens from South Yorkshire far exceed 

 in sooty tendency of colour those of the South. Other more 

 casual specimens, along with black or dark brown central 

 clouding, have a white stripe along the hind margin ; and in 

 one specimen in Dr. Mason's collection this stripe is yellow ; 

 others have the whole of the fore wings grey-brown ; and 

 occasional specimens are blackened throughout. A very 

 curious specimen in Mr. S. J. Capper's collection has the 

 fore wings black-brown, except a very pure creamy-white 

 stripe, cut into, regularly, by dark streaks, lying along the 

 hind marginal area, two white blotches on the dorsal margin, 

 and a row of black spots on the extreme hind margin. A 

 specimen reared in London by Mr. Montgomery, from an 

 egg laid by a female from Richmond Park, is nearly white, 

 with the transverse lines and apical streak dark grey, but tlie 

 middle of the fore wings white and unclouded, with hind 



