76 Belladonna Leaf-Miner 



Fig. 5. Prothoracic spiracle of mature larva (very highly magnified). 



Fig. 6. Larva of second stadium, x 23. 



Fig. 7. Posterior aspect of ultimate segment of same to show the tubercles and posterior 

 stigmata (p..s^.). x34. a/i. anus ; a./, adanal lobes. 



Fig. 8. Mature larva of Pegomyia bicolor. x 10"5. pt.sp. prothoracic spiracle ; jj.sp. 

 posterior spiracle ; a. p. anterior ventral protuberance (" foot "). 



Fig. 9. Posterior aspect of ultimate segment of same, showing arrangement of tubercles 

 and posterior spiracles (p.sp.). X 11. a.l. adanal lobes; an. anus. 



Fig. 10. Larva of second stadium of same, x 27. p.sp. posterior spiracles. 



Fig. 11. Prothoracic spiracle of mature larva of Pegomyia bicolor (highly magnified). 



Fig. 12. Posterior aspect of ultimate segment of mature larva of Pegomyia nlgritarsis. 

 Tubercles are numbered ; 2a, 3rt placed more postero-laterally tlian tlie others. 

 p.sp. posterior spiracle ; an. anus. 



Fig. 13. Puparium of P. %oscyami — ventral view. x7. 



Fig. 14. Puparium of P. bicolor — ventral view, x 8. 



Fig. 15. Buccal-pharyngeal apparatus of mature larva of P. hyoscyami — right lateral 

 aspect, drawn from preparation previously treated with potash and mounted in 

 Canada balsam (camera lucida). X 40. md.s. mandibular sclerite ; i.s. interstitial 

 sclerite; h.s hypostomal sclerite; c.p.s. cephalo-pharyngeal sclerite; pf.s. perforate 

 sclerite: d.^J. dorsal arm of cephalo-pharyngeal sclerite ; v.p. ventral process of cephalo- 

 pharyngeal sclerite ; a. antenna. 



Fig. 16. Buccal-pharyngeal apparatus of P. bicolor (the preparation similarly treated 

 to the previous). X 18. Lettering as in Fig. 15. pt sp. right prothoracic spiracle. 

 The two subtended arms of the dorsal processes shown, one of which belongs to the 

 left cephalo-pharyngeal sclerite. 



Fig. 17. The same dissected out and more highly magnified. For significance of lettering 

 refer to Fig. 15 (camera lucida). d.p. denticular process. 



Fig. 18. Left wing of adult female of P. hyoscyami. x 26. an. anal lobe ; al. alula ; 

 as. antisquama ; anx. auxiliary vein ; 1-6 first to sixth longitudinal veins ; c.v. 

 costal vein ; h.v. humeral vein ; cr.v. anterior cross-vein ; a.cr.v. anterior basal 

 cross vein ; p.cr.v. posterior basal cross vein ; c.c. costal cell ; s.c. subcostal cell, 

 m.c. marginal cell; sm.c. submarginal cell; p.c.^, p.c.-, p.c.^, first, second, and third 

 posterior cells ; d.c. discal cell ; 6.c.\ b.c.-. first and second basal cells ; a.c. anal cell. 



Fig. 19. Left anterior leg of adult female of same, to show arrangement of the bristles. 

 X 19. tr. trochanter ; /. femur ; t. tibia ; ta. tarsus. 



Fig. 20. Middle left leg of same. X 29*5. Lettering as in Fig. 19. 



Fig. 21. Posterior left leg of same. x26"5. Lettering as in Fig. 19. 



Fig. 22. Adult female of P. hyoscyami. X 15. 



Fig. 23. Mature larva of Opius nitidulator. X 16. Drawing made from specimen 

 dissected out from a puparium of P. hyoscyami. 

 Figures 16, 18, 19, 20 21 were drawn with the aid of the Zeiss-Greil drawing apparatus 



by means of which most exact reproductions are obtained. 



