14 



slightly bifurcate. Gnathos broad, squamous. ^Edceagus 

 short, stout. Saccus abruptly pointed. 



Ovipositor long, retractile. Signum short, linear. 



Betularia, L. 43 



Valva simple, sides parallel; costal half heavily spined. 

 Furca fused, spatulate, weak. Uncus blunt, bifid. Gnathos 

 squared, squamous. .SCdceagus long, stout. Cornuti many, 

 fine in band, and small patch. Saccus abruptly pointed. 

 Ovipositor long, retractile. Signum arcuate. 



Lycia zonaria, Schiff. 36 



Valva simple; costa thickened. Furca fused, very weak 

 chitinised plate. Uncus thick, pointed. Gnathos wide, 

 squamous. .^Edceagus thick, short. Cornuti irregular, 

 thorn-like. Saccus rounded. 



Ovipositor long, retractile. Ductus bursae long. Bursa 

 subglobular, without signum. 



Hirtaria, Leach. 43 



Closely related to species included in genera Lycia and 

 Nyssia. It is interesting to note that hybridisation 

 between this and those species, has been accomplished. 



Valva simple; costal fold long. Furca broad, fused, 

 thin. Uncus thick, pointed. Gnathos broad, sqnamous, 

 weak. ^Edceagus rather stout, thickened on the side of 

 orifice. Cornuti thorn-like. Saccus rounded, central in- 

 ward projection. 



Ovipositor long, retractile. Bursa small, delicate. 

 Signum triangular. 



Nyssia lapponaria, Bdv. 33 



Valva simple; costa thickened. Furca broad, fused, thin. 

 Uncus thick, pointed. Gnathos broad, squamous, weak. 

 yEdceagus tipped. Cornuti thorn-like. Saccus rounded, 

 curved inward projection. 



Ovipositor long, retractile. Bursa small, delicate. 

 Signum triangular, pointed. 



