1020 



rKOCEEDlNGS.OF THE THIRD ENTOMOLOGICAL MEETING 



in the origin of the flagelia, the absence of vacuoles, cirri or membranella, 

 prove thit! assertion. The parasites that I have described — excepting 

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

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

 disposition is variable. 



To render the systematization more comjn-ehensible and less arid 

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

 have there (figure 95) a Stephanonyinpha of Janicki, belonging to the 

 family Calonymphidse : large multimicleate forms, axial filaments present. 

 To every nucleus corresponds one blepharoplast giving rise to one or 

 more flagelia. 



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

 monas hluttarum of Steiii (figures 91-92), single and in divisional stage, 

 and Caduceia theobromw (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 Gi/iiinoni/mpha zeijlanica of Dobell which, 

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

 mononucleate forms. No axial filaments. 



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

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



The family Holomastigidee comprises mononucleate forms, without 

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

 a;enera Leidija and Holomastigoies have been included in this family. 



Finally the family Pyrsonymphidae has been modified in this manner : 

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

 multiple axial filaments, no basal apparatus. 



Order Hypermastigina Grassi and Foa 1911. 

 Families. 



