PLATE XXIX 



Figure 1. An ovarian tube from Stomoxys. x 50. 



Figure 2. An ovarian tube from Culex. X 350. 



Figure 3. The common oviduct and connected structures of 



Musca. 



Figure 4. Spermathecae of Haematopota. x 32. 



Figure 5. The reproductive organs of Haematopota. x 12. 



Figure 6. Spermatozoon from Musca nebula. 



Reference letters 



ap. apical filament. 



2, 3, 4 undeveloped follicles, 



n. nurse cells. 



ov. ovum, 



ep. epithelial layer, 



sp. spermathecae. 



a.g. accessory glands, 



c.d. common ovarian duct. 



ov.d. oviduct. 



e.g. conglobate gland. 



c. mass of undifferentiated cells, in which separate foll- 

 icles cannot be- distinguished (germarium). 



