82 LEPIDOPTERA. 



having all the 'markings indistinct. It was obtained at the 

 Isle of Portland. 



On the wing in July. 



Larva stout, with the segmental folds deeply indented ; 

 head greyish freckled with green, rather narrower than the 

 second segment, which is pale grey, mottled with brown ; 

 ground colour green ; on each segment and on either side 

 of the dorsal line are four tubercles, arranged transversely 

 on the second, third, and fourth segments, and in a trapezium 

 on the others ; there are also two in the spiracular line on 

 each segment ; all these emit a single bristle ; dorsal line 

 pale grey, widened toward the hinder half of each segment. 

 Each tubercle is in a brownish area, and the two front ones 

 on each segment are connected with the hinder pair on the 

 preceding segment by an indistinct green stripe rather darker 

 than the ground colour. The spiracles are pale, with a dark 

 ring, and are very inconspicuous. There is a pure white 

 stripe beginning at the front of each segment in the spira- 

 cular line, and extending obliquely to the claspers (prolegs), 

 which, with the legs, are white and resemble porcelain. The 

 ventral surface is streaked and mottled indistinctly with 

 white. (W. F. H. Blandford.) 



August and the beginning of September on Artemesia 

 absinthium (wormwood) and occasionally on A. vulgaris, 

 feeding only upon the flowers, seeds, and buds; eating 

 greedily, in the sunshine — which appears to be essential to 

 its health — but when the weather is wet leaving the plants 

 to hide on or under the ground ; in fine weather, especially 

 towards dusk, it climbs up, and when not feeding it rests 

 on the stems among the flowers, and from its colour and 

 markings resembles them so accurately as to be discovered 

 much more easily by the touch than by sight. 



Pupa apparently undescribed, in a thick tough cocoon 

 of earth and silk. In this state through the winter. 



