TRIFID.'E. f)\ 



the hind margin, but the darker colour interrupted by a faintly 

 white transverse stripe beyond the middle ; cilia smoky-white. 



Female larger, with stouter body, and the anal tuft more 

 com]oressed ; fore wings longer, rather narrower and decidedly 

 more pointed, with a more oblique hind margin ; brownish- 

 drab faintly clouded with umbreous ; median nervure streaked 

 with white ; the black spot more distinctly ringed with white ; 

 second line visible as a curved series of short black streaks 

 lying upon nervures and followed by white dashes ; hind 

 wings paler. 



Underside of all the wings dusky yellowish-white, abun- 

 dantly dusted with smoky-brown, and the nervures edged 

 with the same ; in the middle of each wing is a black spot. 

 Body and leg-tufts whitish-brown tinged with purple ; legs 

 dark brown. 



Usually only a little variable in the depth of ground colour, 

 and ^that of the central umbreous shade, which often is in- 

 distinct, or on the other hand is sometimes blackened ; but 

 occasional specimens are found in which the fore wings are 

 of a unicolorous blackish-brown almost devoid of any trace of 

 markings. In the collection of Mr. A. Robinson is a female 

 which has both orbicular and reniform stigmata faintly out- 

 lined. In that of Mr. Sydney Webb are males in which the 

 white encircling spot of the reniform is produced as a long 

 white streak upon the median nervure to near the base, one 

 of them having the general colour rich purplish-red. 



On the wing in July and August. 



Larva very slender, cylindrical, of uniform thickness, except 

 that the first two and last two segments taper a little ; head 

 shining reddish-brown, mouth dusky-brown, lobes well defined 

 on the crown ; on the second segment is a shining plate of a 

 similar colour to the rest of the body ; the skin soft, smooth, 

 of a waxen texture, flesh-colour, sometimes inclining to pink 

 above, paler flesh-colour below ; dorsal pulsating vessel just 

 visibly paler than the rest of the back, sometimes with a 



