104 HAROLD H. KING — BIONOMICS OF TABANUS. 



appear much duller, owing to the extreme fineness of the stria tion. On the 

 8th abdominal segment the striae are moderately well-marked and of similar 

 appearance on all the faces. 



A JS^atural Enemy. 



From an egg-mass of T. tceniola, taken at Grebelein, numbers of a small 

 Hymenopteron were bred. This has not yet been identified, but is figured 

 in the accompanying plate, together with the parasitised egg- mass showing 

 the exit-hole of the parasites. 



EXPLANATION OF PLATE IX. 



Fig. 1. Tahcmus tcBniola, P. cle B., (S . 



2. „ „ „ ?. 



3. Full-grown larva of T. ticniolct. 



4. Egg-mass of T. t^niola, Avith Chalcid parasites. 



5. Young larva of T. tceniola. 



6. Young larva of Tabanus par, Walk. 



7. Egg-mass of T. tcimiokt. 



8. Egg-mass of T. par. 



9. Tabanus par. Walk., S • 



10. „ „ „ 2. 



11. Larva of T, par, almost full-grown. 



12. Anal segment of pupa of 7\ par. 



13. Pupa of T. par. 



