LA RENTID.t:— CI1\\ RIA . 297 



upon mountains in the north a large proportion have the fore 

 wings uniformly dark orange-brown, deep tawny, umbreous, 

 or even nearly black ; in some of these, however, there in 

 curious interruption of the dark colour bj- a yellow line from 

 the costa down one-third of the length of the first and 

 second lines. So far as I know this extreme variability 

 a^jplies to the male sex. Females, however, are uncertain as 

 to size ; those from Devon hills being very small. 

 On the wing in July and August. 



L.\i{V.\ elongate, smooth, segmental divisions distinct ; 

 third segment swollen at the sides ; head small and rounded, 

 brown ; body pale brown, mottled with pale grey, dorsal line 

 inconspicuously darker ; on each segment are two converging 

 purplish or ferruginous dashes forming two sides of a pale 

 triangle preceded by a brown blotch ; subdorsal line indis- 

 tinctly whitish or pale lilac; divisions clouded with pale lilac; 

 ventral surface shaded with whitish, through which runs a 

 brown line. 



Or — pale yellowish-green ; dorsal line reddish or dull 

 crimson, forked on each segment into two sides of a triangle 

 filled up with white or having a Ijlack dot at the base ; hind 

 legs and spiracles reddish ; undersurface having a whitish 

 central stripe containing a reddish line. 



Ov — pale grey, with a series of X-like grey markingson the 

 back ; a broad alternately dark l)rown and pale grey spiracu- 

 lar stripe : a conspicuous black dash round the division of the 

 second and third segments ; undersurface as in the last 

 form. 



Or — reddish brown, divisions tinged with yellow; a series 

 of pink dorsal triangles, laterally edged with dark brown, 

 and with a black spot on the base ; ventral stripe sometimes 

 absent. (C. Fenn.) 



April to the beginning of June, or even till July in the 

 north; on Vacriiiitrm viyrfil/ii>i {whortieherrj). l'. ri/is-idrni, 

 (cowberry), heather, sallow, and in confinement on \villow — 



