INTRODUCTION. By L. B. Prout. V 



Six subfamilies may be distinguished : 



1. Brephinae. Eye small and oval. Larva 16-legged. 



2. — 6. Eye spherical, nearly always large. Larva almost invariably with less than 10 legs, extremely 

 rarely with more than 10. 



2. Oenochrominae. Hindwing with all veins, the costal free or connected with cell by bar near base ; 

 second radial usually normal. Colour never bright green. 



3. Hemitheinae. As the preceding, but with second radial ^arising above middle of cell. Colour usually 

 bright green. 



4. Acidaliina^. Hindwing with all veins, the costal anastomosing with cell at a point near base. 



5. Larentiinae. Hindwing with all veins, the costal anastomosing strongly with cell, or rarely in rj 

 connected with it by a bar beyond middle. 



6. Geometrinae (= Boarrniinae auctt.). Hindwing Avith second radial wanting or vestigial. 



