PLATE LXIV. —Life History of Syrphus. 
Fig. 1. Egg. 
,, 2. Young larva, x 45. 
,, 3. Full-grown larva, x 8. 
,, 4. Pupa on leaf, x 6. 
,, 5. Fly. x 4. 
,, 6' Wheat plant. 
” ^ Egg laid among wheat aphis. 
„ 8. l 
g V Larvse feeding on aphis. 
,, 10. Pupa. 
Figs. 7, 8, 9, 10 are slightly larger than natural size. 
