Plate 36. 



71 S 



e - 



ns 



33b 



33c 





34 



33b, 33c. To show different character of lateral field as seen in different parts of worm — e, excretory 



tissue ; M.S., nerve strands. 

 54. Transverse section of female worm showing asymmetrical nature of lateral fields and two 

 uteri — one containing eggs, the other parasites. 



Onchocerca Gibsoni. 



