NOTES ON CERTAIN PARASITIC PROTOZOA 27 



trophonucleus, are developed the locomotor organs blepharoplast, 

 flagellum, undulating membrane, etc. The nuclei of the male and 

 female and the parthenogenetic modification of the latter have also 

 their own peculiarities of structure. 



T., noctuce these lie in the undulating membrane, whilst in Sp. Ziemanni they are 

 distributed through the whole surface of the parasite. 



