1020 PHOCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 



in the •rigin of the flagella, the absence of vacuoles, cirri or membraaiella, 

 prov% this assertion. The parasites that I have described — excepting 

 the Infusoria that I specified — belong to the order of Hypermastigina 

 of Grassi and Foa : forms usually large, with numerous flagella whose 

 disposition is variable. 



To render the systematization more comprehensible and less arid 

 I have figured on Plate 170 the illustrations of different genera. You 

 have there (figure 93) a Stephanonympha of Janicki, belonging to the 

 family Calonymphidse : large multinucleate forms, axial filaments present. 

 To every nucleus corresponds one blepharoplast giving rise to one or 

 more flagella. 



You see also the Joenia annectens of Grassi (figure 88), the Lopho- 

 monas hlattarum of Stem (figures 91-92), single and in divisional stage, 

 and Caduceia theobromcB (figure 94), a species described in the last year 

 by Franca. They are all mononucleate forms, with an axial rod and 

 a well developed basal apparatus — characteristics of the family Lopho- 

 monadidse of Grassi. 



You also see (figure 90) the Gijmnonympha zeylanica of Dobell which, 

 with Tr. agilis, belongs to the family Trichonymphidse of Leidy : large 

 mononucleate forms. No axial filaments. 



The small figure you see, is a Microjcenia hexamitoides of Grassi, a 

 flagellate of the family Octomitidse (Plate 170, figure 89). 



The family Holomastigidae comprises mononucleate forms, without 

 axial filaments, and numerous flagella inserted on spiral lines. The 

 genera Leidya and Holomastigotes have been included in this family. 



Finally the family Pyrsonymphidse has been modified in this manner : 

 mononucleate forms, with flagella inserted in spiral lines, simple or 

 multiple axial filaments, no basal apparatus. 



Order Hypermastigina Grassi and Foa 1911. 

 Families. 



UephaiK 

 Janicl 



Pseudoirichonym- 

 pha, Grassi and^ 

 roa 1911. 



nolo7nastigotoides, 

 Grassi and Foa 

 1911. 



Caduceia, Franca 



Leidya Fran?a 



