ACIDALIID^—ACIDALIA. 47 



central spot black ; close by it is often a faint cloudy dorsal 

 portion of a greyish-brown transverse line or shade; con- 

 siderably beyond is a very pretty, strongly undulating, 

 slender brown line, which, as in the fore wings, becomes black 

 at the back of two fulvous blotches, one in the middle, the 

 other close to the anal angle ; elsewhere it is followed by very 

 faint rounded yellowish-grey minute clouds ; and a complete 

 row of similar clouds occupies the hind margin ; cilia white, 

 clouded with brown. Female rather stouter but very similar. 



Underside of all the wings white, but in the fore wings 

 clouded to the middle, and along the hind margin, with 

 smoky-brown or blackish-brown, and having two pairs of 

 faint black crescents marking the margins of the fulvous 

 blotches of the upper side ; on the hind wings similar black 

 crescents perform the same office, and are followed by a row 

 of faint grey-brown clouds ; central spots black. Bodv 

 white ; legs pale brown. 



Usually very constant in colour and markings ; the rows 

 of faint clouds beyond the second line, in reared specimens, 

 sometimes are of a more purplish-grey, and this may be the 

 rule in freshly emerged individuals. If so the colour fades 

 almost immediately to yellowish-grey. A specimen in the 

 collection of Mr. R. Adkin is devoid of these pale clouds, yet 

 lias the fulvous blotches quite conspicuously. 



On the wing in the latter part of May and in June ; and 

 in a second generation from the middle of July till 

 September. 



Lakv.\ not (|uite an inch in length ; rather slender, almost 

 uniform in bulk throughout; the head slightly notched ; skin 

 rugose; spiracular region puffed-out and puckered. The 

 ground colour of the back is brownish-ochreous ; the dorsal 

 line fine and interrupted, darkest near the head, afterwards 

 showing pale grey edged with dusky ; subdorsal line dark 

 brown, commencing very distinctly on the head. On each 

 segment, from the fifth to the ninth, are two obtuse dark 



