TRIFIDM. 99 



and one or two isolated reddish-brown streaks in the position 

 of the first Hue, edged outwardly by a faint parallel shade ; a 

 faint succession of dusky black curves with dots at their 

 points arising from another costal dot and indicating the 

 second line ; and a faintly yellow subterminal line, edged 

 inwardly with a tinge of red or purple. The orbicular stigma 

 is large but only indicated by its partially purple margin ; the 

 reniform rather more distinctly edged on both sides with 

 purple and having in its lower portion a cloudy blackish 

 blotch, which is really the only marking noticeable upon the 

 wing without the aid of a lens ; apex and hind margin faintly 

 tinged with purple ; cilia pale purple divided by a dark 

 grey line, and more purple at the tips. Hind wings broad, 

 with a sinuous hind margin which is twice hollowed toward 

 the anal angle ; dark grey-brown with a golden gloss ; cilia 

 light purple. Female with simple antennae, otherwise 

 accurately similar. 



Underside of forewings glossy dark smoky-grey, costa 

 narrowly, apex and hind margin broadly, pale purple ; from 

 the costa beyond the middle arises a slender, black, cloudy 

 transverse stripe which quickly merges into the general dark 

 colour. Hind wings dusky white, dashed with gre}', and 

 broadly toward the costal and apical regions with purple, the 

 whole having a light golden gloss ; central spot large, blackish, 

 followed by a faint, slender, smoky- black transverse stripe ; 

 cilia pale purple. Body light purplish-brown, legs and leg- 

 tufts darker purplish-browm. 



Not very variable, except that a recurrent form is of a rich 

 deep red or purplish-red, with the same paucity of marking. 

 This form appears to accompany the type, rarely in the 

 Southern counties, rather more frequently in the Eastern, and 

 of a peculiarly deep rich colour in the Breck-sand district ; 

 very much more commonly in the North, where indeed it 

 becomes predominant. It is this variety which has been 

 named castanca. It is connected with the type by inter- 

 mediate gradations — pale drab at the base, toniug gradually 



