1862.] 



181 



Subcostal bifid ; median trifid ; with or without disco-central. 

 Wings thin, often elevated in repose. F. w. often with an areola. Geometridae. 



VVINQ«W|-rH l-ONO OILIA, POINTED. IIV1AGO SMALL. 



NEURATION SIMILAR IN FORE AND HIND WINGS. 



Costal veins bifid or simple. 

 Subcostal with 2nd'y cell. F. w. with an intercostal branch between a branch of 

 the costal and the first of subcostal; second branch furcate, with four branches 

 from the end of the disk. An intermediate branch between the bifid medio- 

 posterior and the median vein. Micropterigidae. 



Subcostal without 2nd'y 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. Micropterigidae. 



NEURATION DISSIMILAR IN FORE AND HIND WINGS. 



Hind wings rather broad; very often ovate-lanceolate^ never linear- 

 lanceolate. 



Median 2-branched; discal nervules 2 or 3. Subcostal bifid or 

 simple. Group Tineides. 



Median 3-branched ; discal nervules 2, 1 or 

 none. Subcostal bifid or simple. 

 Costa often excised ; very often the upper median nervules pedi- 

 cellate. Group Gelechides. 



Bind wings extremely narroio^ linear lanceolate or almost setiform. 

 Median vein 2 or 3-branched. Subcostal simple or bifid. 



Tineidae. 



Disk most often unclosed; with a simple or furcate nervule, free, 

 or arising from the subcostal. Group Gracilarides. 



Median vein simple. Subcostal central, 2, 3 

 or 4-branched. 

 Disk always unclosed. Costal vein obsolete. 



Group LithocoUetides. 



I Gracilaridae. 



WINGS PENNIFORM OR FISSURED. 



Fore wings fissured, hind wings entire. 

 Sometimes amongst the Deltoididae. 



Both wings fissured. 

 Fore wings bifid. Hind wings trifid. Pterophoridae. 



Fore and hind wings divided into six. Alucitidae. 



