TRIFIDAL. 183: 



indented, obscurely paler, strongly edged on the inner side 

 with dark grey. Each transverse black Hue originates from 

 a large black costal spot, and the darlc edging of the sub- 

 terminal line arises from a large triangular blackish spot 

 before the apex ; orbicular stigma distinctly ringed with black 

 and bordered on each side by a rather squared blackish blotch ; 

 reniform stigma very obscure, edged only at the back with 

 black ; no claviform stigma ; central shade conspicuous, dark 

 smoky-grey ; cilia crenulated, slate-grey, rather dashed with 

 darker. Hind wings pale smoky-grey, shading to whitish 

 toward the base, to darker toward the hind margin and 

 around the apex ; sometimes also with a rather darker central 

 transverse cloudy stripe ; nervures dark grey ; cilia white. 

 Female with threadlike antenna, and sometimes the general 

 colour rather more smoky, but hardly differing from the male 

 except in the stouter body. 



Underside of the fore wings very pale slate-grey, the middle 

 area smoky-grey ; beyond the middle are two blackish costal 

 blotches, from which arise obscure smoky-black transverse 

 stripes, the second incomplete ; hind wings white, dusted with 

 grey, and with a slender transverse grey stripe beyond the 

 middle. Body and leg- tufts hoary-grey, the latter more smoky- 

 grey toward the front ; legs blackish, barred with grey. 



An exceedingly pretty species when fresh, and hardly 

 variable except in the depth of ground-colour and central 

 shading, but the soft bluish-slate colour fades in time and 

 becomes of a smoky-grey, or even brownish-grey. My 

 description has been made from exquisitely fresh and beau- 

 tiful specimens reared last year by Mr. C. S. Gregson, and 

 provided for the purpose. A variety is on record entirely 

 suffused with blackish-grey, and another having a broad 

 blackish central band. They have not come under my 

 observation. 



On the wing in July and August. 



Larva plump, active, rather stoutest behind and tapering 



