BOARMID.E—NYSSIA. 145 



to near the apex, where it becomes a little arched; apex 

 angulated ; hind margin oblique, quite evenly curved to 

 round the anal angle ; dorsal margin nearly straight ; semi- 

 transparent, the surface merely set with isolated smoky- 

 black scales, which are whiter when the light falls on them 

 from toward the base ; the costal margin and the nervures 

 black, dusted with orange-yellow ; first and second lines 

 oblique, near together, very faint, yet broad, and consisting 

 of closer aggregations of the separated black scales, except 

 that each forms a small black cloudy spot on the dorsal 

 margin ; cilia smoky-black with a purplish gloss. Hind 

 wings small, rounded behind ; even more nearly transparent, 

 the isolated scales long and grey, but still more thinly dis- 

 tributed and minute ; nervures black, dusted with yellow ; 

 cross-bar black ; cilia smoky-black with a purple gloss. 

 Female apterous, except that two black flaps, dotted with 

 orange and excessively hairy, indicate where the wings should 

 be ; antennas simple but rather notched and ciliated, black, 

 dotted with orange ; thorax and abdomen thick and shaggy, 

 black except that the hairs are tijDped with white, and that 

 the orange stripe is complete from the face, down the back 

 of thorax and abdomen, to the anal segment ; legs black, 

 the tibiae furnished scantily with hairs like those of the 

 body. 



Underside of all the wings of the male apparent!}" devoid 

 of scales, except on all the margins, which are smoky-black, 

 and a few at the discal cross-bar which form a faint spot ; 

 nervures hairy, body and legs shaggy, black, with hoary tips 

 to the long scales ; tarsi deep black, (Described from speci- 

 mens furnished for that purpose by Mr. W, M, Christy.) 



So far as is j^et known, not variable here, but Continental 

 specimens appear to be more thickly furnished with scales 

 of a greyish white colour, the transverse lines or stripes 

 are smokj^-black, and additional ones become visible, one 

 at the base, the other toward the hind margin. 



On the wing in April and May. 

 VOL. VII. K 



