Figure Page 



15. Detail of the cuticle in a healthy 



pupa. 54 



16. Detail of microvilli extending into 

 the fluid space of a pupa infected by 



B. dimorpha . ' 54 



17. Sagittal section through the developing 



eye of a healthy pupa. 56 



18. Sagittal section through the eye of a 



pupa infected by B. dimorpha . 56 



19. Sagittal section through the eye of a 

 healthy pupa. 56 



20. Sagittal section through the eye of a 

 diseased pupa. 56 



21. Sagittal section through the developing 

 eye of a healthy pupa showing detail of 

 optic nerve and base of the developing 

 ommatidium. 58 



22. Sagittal section through the eye of a 



pupa infected by B, dimorpha . 58 



23. Fat body of a healthy pupa. 58 



24. Fat body of a pupa infected by B. dimorpha . 58 



25. Tissue specificities of MB and NMB spores 



of B. dimorpha . 60 



26. Tissue specificities of MB and NMB spores 



of B. dimorpha . 60 



27. Tissue specificities of MB and NMB spores 



of B. dimorpha seen at higher magnification. 60 



28. Transmission electronmicrograph of a 



mature NMB spore of B. dimorpha . 80 



29. Transmission electronmicrograph of a 



mature MB spore of B. dimorpha . 80 



30. Scanning electronmicrograph of a mature 



^TMB spore of B. dimorpha . 80 



vii 



