10 PLATYPTILUS. 



produced, the legs more slender, the whole insect 

 havmg a less robust appearance. 



It approaches more nearly to P. gonodactylus^ 

 SchifF. 



Platyptilus albidus, sp. nov. 



(Plate I. Fig. 8.) 



Cainte et thorace cmereo-alhidis. 



Alis anticis cinereo-albidis, WMCula trimigtdari costali 

 brunnea, costa et margine apicali brimneo suffu- 

 sis, Ci'liis albidis ; posticAs cum ciliis unicoloribus 

 dilute brunneis. 



Tibiis posticis cinereis, pedibus et calcaribus 'paido 

 pallidioribus. 



Head, palpi, and thorax bluish white; antennse 

 dotted above. 



Fore wings bluish white, dusted with brownish scales, 

 much suffused towards the apical margin with 

 greyish brown ; a pale line running from the 

 apex across the fissure parallel with the apical 

 margin, and a pale space immediately beyond 

 the triangular costal patch ; the costa is dusted 

 with brown, the triangular patch brown, the 

 dorsal margin touched with brown. A faint in- 

 dication of two brown spots before the middle 

 of the wing ; the upper one twice as far from 

 the base as the lower ; and a brown line running 

 along the base of the cilia on the apical margin, 



