TRIFIDM. 245 



border on the first branch of the median nervure is a white 

 dot ; cilia golden-brown, with the tips white. Female quite 

 similar, except that the abdomen is long and conical, ter- 

 minated by a long pointed ovipositor case, and devoid of the 

 anal tuft. 



Underside of the fore wings dull smoky-brown, paler in 

 the middle and at the base ; nervures darker ; costa toward 

 the apex dotted with white ; cilia broadly dashed with white ; 

 hind wings smoky-white, broadly dusted toward the costal 

 margin with ochreous, and broadly banded with dark smoky- 

 brown before the hind margin ; cilia edged with white. 

 Body and legs yellowish-brown, the tibiae dark brown, barred 

 with yellowish-white. 



Hardly variable, except that in some examples the sub- 

 terminal line is almost obliterated, though its edging of black 

 spots and wedges remains complete ; in others it is complete 

 and extended, so as to throw white streaks to the margin 

 where they join those in the cilia. There is also a slight 

 difference in general colour between the specimens found on 

 the Kentish coast and those from the Portsmouth district, 

 the latter being of a rather lighter purple-brown. 



On the wing at the end of May and in June. 



Larva moderately stout, cylindrical, but tapering a little 

 toward the head, and still less at the hinder extremity; 

 ground colour pale ochreous, or pale brownish-ochreoas ; 

 head delicately freckled and streaked with dark brown down 

 the front of each lobe ; the second segment has a dark brown 

 or brownish-grey plate, through which the fine dorsal and 

 broader subdorsal lines of ground colour are visible ; on the 

 rest the dorsal line can be discerned as a fine thread of 

 ground colour running through the dorsal blackish spots and 

 ill-defined pear-shapes that follow them on each segment and 

 form a dorsal pattern ; two pairs of black dots are equally 

 distinct on the back of each segment, and a similar dot is 

 placed just above each spiracle, which last is white, faintly 



