PLATTPTILUS. 15 



Slender and of delicate appearance. 



Head white ; palpi white, touched with cinereous at 

 the sides ; antennae dotted above. 



Thorax dusted with cinereous. 



Fore wings narrow, whitish, dusted with cinereous 

 atoms, especially along the costa ; the triangular 

 costal patch brown, followed by the usual pale 

 space ; a brown line along the base of the white 

 fringes ; a very slender whitish line, running 

 parallel to the apical margin, terminates in a 

 white dash on the costa, reaching to the extreme 

 apex ; the antemedian dots scarcely indicated. 



Hind wings pale cinereous, the third lobe perhaps 

 slightly the lightest in colour ; fringes nearly uni- 

 colorous, pale cinereous, scarcely paler at their 

 bases. 



Abdomen yellowish white. 



The third pair of legs cinereous, slightly whitish below 

 each joint and on the spurs and feet. 



Expanse 20 millims. 



This species may be distinguished by its slender 

 appearance and narrow fore wings, which are so deli- 

 cately dusted as to be of almost the same shade as the 

 pale cinereous hind wings, which separate it at once 

 from any of its allies now described. 



I found only one specimen of this species, flying 



