LIST OF ILLUSTRATIONS 



FIGO 

 1. 



2. 

 3. 



4. 



5. 



6. 



7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 

 15. 

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 21. 

 22. 

 23. 

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 26. 

 27. 

 28. 

 29. 

 30. 

 31. 



RE PAGE 



Musca domestica, female ...... Frontispiece 



Reproduction of Plate from Gleicheii ..... 3 



M. domestica, vertical .section of head and proboscis . . 13 



Structure of pseudo-trachea . . . . . . 16 



Pseudo-ti'acheal rings . . . . . . . . . 16 



J/, domestica ; thorax, lateral aspect ...... 19 



Wing of J/, domestica ......... 23 



M. domestica, nervous system 30 



Thoracic ganglion, lateral aspect ...... 32 



Thoracic ganglion, ventral aspect ...... 33 



M. domestica, longitudinal section of alimentary canal . . 34 



Alimentary canal, dorsal a.spect ....... 35 



Section of proventriculus 37 



Posterior region of alimentary canal ...... 38 



Transverse section of lingual salivary gland .... 40 



Longitudinal section of rectal gland .40 



J/, domestica, tracheal sacs of anterior thoracic spiracle . . 43 



Tracheal sacs of posterior thoracic spiracle .... 44 



Ducts of cephalic tracheal supply ...... 45 



M. domestica, female reproductive organs ..... 49 



Female reproductive organs, accessory glands .... 50 



Female abdomen and ovipositor . . . . . . 51 



M. domestica, male reproductive organs ..... 53 



Terminal abdominal segments of male ..... 54 



Lateral aspect of terminal abdominal .segments of male . . 55 



Terminal vsegments of male and penis ..... 56 



Penis, lateral aspect 57 



M. domestica, transverse section of head capsule ... 59 



Transverse section of haustellum . . . . . . 61 



Transverse section of oral lobe 62 



Transverse section of labial salivary glands .... 63 



