«4 LEPinOPTERA. 



dull white; second line dull black, formed of a rather 

 oblique series of dots or short blunt angles, with a pale 

 outer edging; the enclosed middle area more thickly dusted 

 with black-grey than the remaining surface, and in it are 

 two black discal dots ; extreme hind margin dotted with 

 black ; cilia long, dark grey, intersected by two paler lines. 

 Hind wings rather short, flatly rounded behind ; glistening 

 smoky-white, with a leaden shade along the hind margin, 

 and the nervures narrowly brown ; cilia smoky-white, the 

 tips whiter. Female similar but rather larger and the body 

 stouter. 



Underside of the fore wings shining leaden-grey. Hind 

 wings leaden-white. Body glistening whitish-grey. 



Usually not very variable, but a form having the ground 

 colour much whiter, the central area also paler, and the hind 

 wings, with the thorax and abdomen, generalh* whitened, 

 has been taken on several occasions m East London, and 

 was at one time described as a distinct species under the 

 name of Trachonitis (?) jJri/eirlla. 



On the wing from June till September, at varying times. 



Larva reddish-white with numerous red-brown raised 

 dots ; head brown ; dorsal and anal plates dotted with 

 brown. (F.-R.) 



October till May in the dried pods of locust bean (Cerutonia 

 .siliqii.a), dried almonds and figs, edible chestnuts; said also 

 to feed on dates, oranges, and the fruit of Pyrus japonica. 

 Sometimes it appears to feed for more than one year. 



Pupa apparently undescribed. 



The history of this species, so far as this country is con- 

 cerned, is somewhat obscure. It was included by Mr. 

 Stainton in his " Manual " with only the statement, " Once 

 at Darenth Wood." But the subsequent captures have been 

 made solely in mills for the manufacture of vegetable oils 

 from dried fruits or legumes, or else in, or near, warehouses 



