BY R. J. TILLYARD. 315 



8uGf4ESTED CLASSIFICATION FOR THK LePIDOPTERA. 



The characters here studied, thongli not suitable for the main 

 subdivision of the Order into two Suborders, may be legitimately 

 used for the subdivision of the first of the two Suborders which 

 we have based upon the wing-venation, viz., the Homoneura. 

 They cannot, however, be used in subdividing the Heter<jneura, 

 since the three Amplexiform groups do not lie along one single 

 line of descent. 



We may, therefore, adopt the following classfication : — 

 Order LEPIDOPTERA. 



1. Suborder HOMONEURA. 



Venation of fore- and hind wings closely similar and of primi- 

 tive design. 



Division A. Jugo-frenata. — With archaic jugo-frenate coup- 

 ling-apparatus consisting of jugal lobe, humeral lobe, and frenu- 

 lum; the jugal lobe turned under the forewing, and acting as a 

 retinaculum for the forewing Family Microjytpvyyidcp (s.lat.). 



Division B. Jugata. — With specialised jugate coupling-appa- 

 ratus; the frenulum absent, the jugal lobe elongated and nar- 

 rowed, usually passing beneath the hindwing 



Families HepiaJidce and Frototheoridce. 



•2. Suborder HETERONEURA. 



Venation of fore and hindwings dissimilar, that of the hind- 

 wing being strongly reduced in comparison with that of the 

 forewing. Coupling-apparatus of frenate type, except in three 

 of the highest groups, in which the frenulum is absent and the 

 coupling is of the amplexiform type. 



(Division of the immense number of forms into superfamilies 

 and families must be based upon wing-v^enational and other 

 characters). 



