PLATE L 



Apanteles militaris: 



Fig. I. — Diagrammatic drawing showing the embryo inclosed by the fused amniotic 

 and serosal envelopes, as, Fused envelopes; c, chorion; cv, caudal vesicle; h, head. 



Fig. 2. — Diagrammatic drawing showing the fused envelopes dividing into their 

 two parts, the serosal cells being grouped at each pole, a, Amnion; c, chorion; cv, 

 caudal vesicle; h, head; s, serosal cells. 



Fig. 3. — Diagrammatic drawing showing the egg ready to hatch, the serosal cells 

 having become a loose mass and the embryo straightened out in the egg. a, Amnion; 

 c, chorion; cv, caudal vesicle; h, head; s, serosal cells. 



Fig. 4. — Diagrammatic drawing of the larva during its first molt, b. Brain lobes; 

 cv, caudal vesicle; h, head; ht, heart; m, molted skin; mp, Malpighian tubes; o, esoph- 

 agus; p, pharynx; sg, silk glands; st, stomach; arrows indicate the blood cycle; t, 

 rudimentary tube in the caudal vesicle connecting with the heart. 



Fig. 5. — First instar. cv, Caudal vesicle. 



Fig. 6. — Second instar. cv. Caudal vesicle. 



Fig. 7. — Third instar, showing the position of the spiracles and the caudal vesicle 

 withdrawn. 



C508) 



