I 



206 PAPERS BY DR. B. CLEMENS. 



Subcostal without 2ndy cell. In both wings, three subcosto- 



marginal nervules, the apical bifid; medio-posterior from 



near the base, connected with the median or a branch of it 



by a transverse branch. MicropteHgidse, 



Neuration dissimilar in fore and hind-wings. 



Hind-wings rather broad; very often ovate-lanceolate, never 



linear-Ian ccolate. 

 Median 2-branched; discal nervules 2 or 3. Sub- 

 costal bifid or simple. Group Tineides. 

 Median 3-branched; discal nervules 2, 1, or none, i . 

 Subcostal bifid or simple. i 



Costa often excised; very often the upper median 

 nervules pedicellate. Group Gelechides. J 



Hind-wings extremely narrow , linear-lanceolate or almost 

 setiform. 

 Median vein 2 or 3-branched. Subcostal simple or 

 bifid. 

 Disk most often unclosed; with a simple or' 

 furcate nervule, free, or arising from the sub- 

 costal. Group Gracilarides. 



Median vein simple. Subcostal central, >Gracilaridce. 

 2, 3 or 4-branched. 

 Disk always unclosed. Costal vein obsolete. 

 Group Lithocolletides. 



WINGS PENNIFORM OR FISSURED. 



Fore-wings fissured, hind-wings entire. 

 Sometimes amongst the Deltoididce. 



Both wings fissured. 

 Fore-wings bifid, hind-wings trifid. Pterophoridse, 



Fore and hind-wings divided into six. Alucitidse. 



