23 
puparium was lying at the side of it. From this puparium a specimen 
of the above species was reared on 3Ist of May. The species is 
double-brooded, the first generation occuring in the spring, the second 
in the autumn. 
Explanation of the figures. 
Phorocera caesifrons Macq. 
Fig. 1. Empty eggshell. 
— 2. Eggshell and the hole through which the maggot has penetrated 
into the host. 
— 3. First stage. Pharyngeal skeleton. 
— 4. Second stage. Pharyngeal skeleton. 
— 5. — — Anterior spiracles. 
— 6. Third stage. Pharyngeal skeleton. 
— 7. — — Anterior spiracle. 
— 8. — — Posterior spiracles. 
— 9. Puparium. 
Pelatachina tibialis Fil. 
Fig. 10. Third stage. Pharyngeal skeleton. 
— 11. — — Posterior spiracle. 
— 12. Normal puparium. 
— 13. Maggot-like puparium. 
Cistogaster globosa F. 
Fig. 14. First stage. Spines on the skin. 
— 15. — — Pharyngeal skeleton. 
— 16. Second stage. Pharyngeal skeleton. 
— 17. — — — — 
— 18. — — Full grown maggot. 
— 19. — — Anal end with the posterior spiracles. 
— 20. Puparium; after the emergence of the fly. 
— 21. Ælia aciiminata L. with three eggs of Cistogaster globosa on 
the dorsal surface of the abdomen. The antennæ, the legs and 
the posterior wings are removed. 
