4U) I.i:i'll>OI' lERA. 



Cenus 11. LITHOSTEGE. 



Aiiteuiia! naked; palpi short ; head rouL;h ; tlmrax uarrou'. 

 smooth ; ahdonieu smooth and slender, but knoldied or 

 thickened, aud bent down behind ; fore wings prolonged, 

 pointed, somewhat farinaceous in appearance, the dorsal 

 margin short ; hind wings narrow and small, silky, angii- 

 lated at the apex; vein 1 short and close to the dorsal 

 margin. 



We liav(> but one species. 



1. li. griseata, Srliiff.-. nivearia, .S'///. McuikiI. — Ex- 

 panse 1 J inch. I'ore wings long and pointed, but expanded 

 behind ; greyish-white with a powdered appearance and only 

 a i'aint indication of one line running in a curve to the apex. 

 Hind wings silky white. 



.Vntenn;i; of the male I'ather stout, simple, naked, dark 

 brown ; back of the shaft greyisli-white ; palpi minute, 

 pointed, black-brown : face. head, neck-ridge, and thorax 

 ashy-white dusted with lirown ; abdomen slender, rather 

 cylindrical, but towarils the anal segment thickened and 

 bent down; shining silky wliite, dusted with brown or grey; 

 anal tuft very short but shining. Fore wings ))ointed but 

 expanded beliiml ; costa very little arched or nearly straight ; 

 ape.x sharply angulated; hind margin, close below it. a very 

 little retuse. then tilled out, long nnd liroadly curved ; dorsal 

 iTiargin also rather full. l)ut short ; colour uniformly creamy- 

 white minutely dusted with grey, often without markings, 

 but in some specimens showing a faint brown-grey line or 

 stripe arising on the dorsal margin near the anal angle and 

 crossing the hinder ])ortion of the wing in an even curve to 

 tile apex ; cilia white. Hind wings elongated, very narrow, 

 rather angulated at the apex, otherwise rounded behind ; 

 very silkj-, white or greyish-white ; cilia white, rather long, 

 l-'emale rather smaller, the body more pointed and a little 



