246 LEPIDOPTERA. 



outlined with black ; in front is a patch of dark grey or 

 blackish freckles in the subdorsal region, and some broken 

 patches of freckles, in lines of curves, extend to the spiracular 

 region ; undersurface of the same colour. 



When young it is greenish-grey with paler dorsal and 

 subdorsal lines, and a darker stripe along the spiracles, 

 bounded above by a paler undulating line ; some faint darker 

 marks along the back indicate the future dorsal design ; a 

 pale stripe runs beneath the spiracles, and the undersurface 

 is darker greenish-grey. At the next moult, when about 

 three-eighths of an inch long, the ground colour is either 

 pale drab or pale och]-eous-yellow, with a tolerably distinct 

 design of dark grey or blackish diamond shapes and spots on 

 the back, and when it has attained the length of three- 

 quarters of an inch the whole pattern is more clearly defined 

 than at any other period, showing that it is composed of 

 closely aggregated greyish or blackish atoms, which, as the 

 larva grows, become more dispersed, with increasing intervals 

 of the ground colour between them. In this clearly defined 

 stage of marking, the ground colour is yellowish ochreous, 

 and the dorsal pattern consists of a somewhat ovate blackish 

 spot at the beginning, followed by a diamond or pear-shape, 

 extending to the back of each segment ; the front half of 

 each of these shapes rather bare of freckles, the hinder half 

 filled up so as to look blackish ; the anterior pairs of black 

 dots distinct, the hinder pairs often attached to the side- 

 angles of the diamonds, and always touched by a blackish 

 line of freckles which curves or festoons along from the 

 hinder dot of one segment to the hinder dot of the next ; 

 then come two broad and irregularly thickened stripes of 

 freckles which, about the middle of each segment, slope 

 towards each other till they touch, then return to their 

 previous level ; below the point of dorsal contact is a cloud of 

 freckles surrounding the spiracle. From this the markings 

 gradually fade till the adult colouring is assumed. (Con- 

 densed from Buckler.) 



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