354 LEriDOPTERA. 



not plumose ; body very slender ; wings rounded, opaque, 

 with close glistening bronzy black-brown scales, which are 

 rather large and loose. 



Females apterous, but having antennse and well-developed 

 legs. 



Larva in a case formed of silk covered with bits of dried 

 grass, or morsels of leaf, or bark. 



Pupa in the larva case. 



Easily distinguished from the two preceding genera by 

 the wings being covered with scales and not hairy. Exceed- 

 ingly difficult to distinguish among themselves, the 

 characters being of somewhat doubtful value. A table of 

 the species may be useful. 



A. Fore wings broad and rounded — 



B. Over half an inch in expanse ; fore wings purple-brown, 

 hind wings paler. F. crassiorella. 



W. Half an inch in expanse ; fore wings golden brown, 

 hind wings dark. t. intermediella. 



B^. Half an inch in expanse; fore wings very broad, 

 purple brown. F. rohoricolella. 



A^. Fore wings elongated — 



C. Fore wings rather broad, bluntly pointed. F. hctulina. 

 C'-^. Fore wings narrow. F. scdicolella. 

 C^ Fore wings broader, paler, more pointed. F. iabulella. 



1. F. crassiorella, Bruand. — Expanse -j%- inch (15 mm.). 

 Small, round-winged, bronzy ; hind wings slightly paler. 



Antennae of the male rather more than one-half the length 

 of the fore wings, slender, regularly pectinated with rather 

 short teeth which lean obliquely forward, but are not massed 

 together ; dark grey. Head with the slender thorax and 

 abdomen black-brown, covered with faintly shining scales ; 

 abdomen slightly tufted. Fore wings elongate-ovate with the 

 costa slightly and regularly rounded ; apex rather bluntly 

 founded off; hind margin also rounded to the anal augle. 



