TRIFWJE. 143 



and attains the middle of the costal margin, passinsi; thence 

 with a bold curve, as a black stripe, to the hind margin 

 below the apex. In this form the orbicular stigma is more 

 complete, having an entire black margin faintly lined with 

 paler and then filled with black ; sometimes the inner edge 

 of the reniform is also visible as a curved black line; the 

 claviform also blackened, but, with the other markings, much 

 obscured by the black clouds and stripe. In a third form, 

 which on the whole is the most frequent with us, a broad 

 deep-black sti'ipe occupies more than the costal half of the 

 wings, blotting out the markings, but broken into by an 

 angle of the dorsal ground colour in the middle and also 

 broken by a subraarginal stripe of the yellowish-grey colour. 

 Cilia crenulated, dusky black, dashed with pale grey. Hind 

 wings short, rounded, white, with the nervures conspicuously 

 dark grey-brown and a shade of the same along the apical 

 margin ; cilia white sometimes clouded with grey-brown. 

 Female extremely similar. 



Underside of the fore wings smoky-brown in the middle, 

 costal region white dusted with purple ; hind margin very 

 broadly similar and with white nervures ; discal cell fur- 

 nished with abundant long hair-scales ; hind wings white, 

 costal region broadly dusted with purple-brown ; a slender 

 curved purple-brown transverse stripe beyond the middle ; 

 central spot black; body and legs purple-brown; leg tufts 

 whitish. 



It has been necessary to describe the principal variations 

 in indicating the characters of the species. All three forms 

 seem to be constant — at least, so far as known here ; there 

 is less disposition to intermediate variation than in almost 

 any other variable species. 



On the wing in April and May. 



Larva stout, rounded, incisions slightly compressed, head 

 hemispherical, shining, rather flattened in front, reddish- 

 ochreous or pinkish-brown, reticulated with dark brown, 



