190 LEPIDOPTERA. 



verse stripe, and along the hind margin another. Body and 

 legs pale yellow. 



Variable in the shade of colour of the fore wings, from 

 bright to extremely pale yellow ; and in the size of the mar* 

 ginal black dots, those near the hind margin being occasionally 

 almost obliterated. Mr. Herbert Goss has one in which they 

 are almost totally so. On the other hand, in some specimens 

 the black stripes are broadened and joined by cross black bars, 

 or their margins clouded, considerably darkening the surface. 



On the wing in June, and in a second generation at the end 

 of July and in August. 



Larva, when full grown, about 1 inch long, having twelve 

 legs ; the body cylindrical, thickest at the fourth segment ; 

 the segmental divisions deeply indented ; when at rest the 

 middle segments are generally arched and the head bent 

 down ; colour rich chocolate-brown ; dorsal line rather darker 

 and edged with very fine paler lines ; subdorsal line also 

 darker but scarcely visible ; spiracular stripe broad, pale 

 yellow, and with a fine brown thread running through its 

 length ; in it are also some rich yellow and orange spots 

 which after the last moult disappear, and the whole stripe 

 becomes paler. 



When first hatched a dingy little looper with a black trans- 

 verse dorsal hump on each of the four middle segments, but 

 at each moult these humps become less until nothing remains 

 but the usual dorsal dots, black and distinct, and these also 

 afterwards disappear. (Eev. J. Hellings.) 



There is a green variety with white dorsal line and spira- 

 cular stripe, and the head, dorsal shield, and anal plate and 

 legs brown ; prolegs green. 



July and September in two generations, on Convolvulus 

 arvensis (field bind-weed), feeding upon both leaves and 

 blossoms ; very sluggish and hardly moving more than from 

 one plant to another. 



Pupa small, red-brown ; among grass-stalks. (Hofmann.) 



