200 PAPEKS BY DR. B. CLEMENS. 



* * Neuration not alike in fore and hind-wings. 



Without a costal vein. 



Subcostal vein bifid; with disco-central nervule; median 

 4-branched. Bombycidse (Oylothrix}. 



With a costal vein. 



f With a more or less distinct intercostal cell. 

 Costal vein short ; subcostal 3 or 4-branched. 

 Cell nearly circular, more or less distinct; discal branchless; 

 median 4-branched. Bombycidae, 



Costal rather long ; subcostal bifid, attenuated. 

 Cell long, narrow ; discal fold decided ; median 4-branched. 

 F. w. fold thickened. Cossidae, 



f f Without an intercostal cell. 



J With a long internal vein extended to anal 



angle. 



Costal long, free, simple. Subcostal 3-branched. 

 Disk usually open ; if closed without disco-central. 

 F. w. with the subcosto-inferior nervule furcate. Saturn idse, 

 F. w. with the subcosto-inferior nervule simple. 



Ceratocampidse, 



\ \ With a short internal vein, near inner 



margin. 



Costal and subcostal veins parallel towards the base. 

 Subcostal divides interior to the discal vein. 

 Discal angulated, simple, arising from subcosto-post apical. 

 Antennae pectinated or filiform. Palpi very short. Tongue 

 almost obsolete. Wings often falcate. * DrGpanulidfiGi 

 \ \\ Without an internal vein. Subcostal bifid. 

 Median trifid. Discal nervule arises from subcostal. 

 F. w. costal vein bifid. H. w. tailed. Imagos papilio- 

 naceous. Uranidse, 

 HIND-WINGS WITH A BKISTLE AT THE BASE. 

 WINGS WITHOUT LONG CILIA, NOT POINTED. 



HIND-WINGS WITHOUT A COSTAL VEIN. 

 Submedian and internal veins distinct, long. 



* Median vein 4-branched. 

 Hind-wings, costa dilated at the base. 



Subcostal curved, 3-branched, with an imperfect basal cell. 



* Characters drawn from Platypteryx (Drepana) lacertinaria of Europe. 



