PLATYPTILUS. 13 



Platyptilus albidorsellus, sp. nov. 



(PLATE I. FIG. 10.) 



Capite albido etfusco irrorato. 



Alis anticis albidis, costa et macula triangulari cos- 

 tali brunneis, regione apicali brunneo suffusa, 

 lineolam albam obliqiiam gerente ; posticis brun- 

 neis, ciliorum basibus albidis. 



Tibiis posticis cinereis, pedibus et calcaribus paulo 

 pallidioribus. 



Head and palpi cinereous, sprinkled with whitish 

 scales; frontal tuft short. 



Thorax sprinkled cinereous and whitish. 



Fore wings white, with two brown antemedian spots ; 

 the costa thickly dusted with brown, forming a 

 gradually widening streak from the base to the 

 triangular brown costal patch. The dorsal mar- 

 gin touched with brown, with a spot of the same 

 colour at the commencement of the dorsal cilia. 

 The apical region is suffused with paler brown, 

 separated from the triangular patch by a white 

 space, and from the apical margin by a slender 

 oblique white line crossing the two lobes; the 

 line at the base of the white cilia is brown. 



Hind wings brown, with decidedly pale bases to the 

 brown cilia on every lobe. 



The posterior pair of legs are clouded with cinereous ; 

 the spurs and feet scarcely whitish. 



Expanse 30 millims. 



