Plate X. 

 (To be bound facing Plate X.) 



BlTHYS QUERCUS. 



Fig. 1. — Ovum in situ on oak-twig x5. 



Fig. 2.— Ova x 10. 



Fig. 3. — Larva on foodplant xl. 



Fig. 4. — Pupa (ventral and dorsal views) x 2. 



Fig 5. — Imago xl. 



(Figs. 1 and 4 by E. Main, the others by A. E. Tonge.) 



