162 



WILLIAM T. M. FORBES 



nous, without a trace of basal fork. Hind wing lanceolate (fig. 115) 

 or linear, usually abruptly narrowing before middle; often with 

 strongly sinuous costa; the fringe much broader than the wing. 

 Frenulum of female with two bristles. Venation of the hind wing 

 usually more or less obscure, the veins being mere thickenings and 



FlGS. 115-122. GRACILARIID^E 



115, Gracilaria alchimiella (Europe), venation; 116, Par&rnix anglioella, (Europe), 

 venation; 117, Marmara salictella, venation; 118, Leucanthiza amphicarpecefoliella, 

 venation (the asterisks mark inconstant veins) ; 119, Cremastobombycia solidaginis, 

 venation; 120, Lithocolletis emberizcepeiwella $ (Europe), venation; 121, Acro- 

 cercops strigifinitella, larva, seta map ( after Heinrich ) ; 122, Lithocolletis species 

 (from maple), seta map 



difficult to trace either in denuded dry wings or in stained ones. 

 Sc and R closely parallel when the venation is best developed, and 

 connected by what appears to be an oblique crossvein about two- 

 fifths way out, which is much farther from base at its lower end; 

 Sc either stopping at that point or running well toward apex ; R 

 reaching apex; M! and M, arising from radial stem, or connected to 

 it by a short cross- vein; M 3 from Cu-stem; cell always open between 



