HYPERMASTIGINA 



411 



Genus Rhynchonympha Cleveland et al. Elongate; number of fla- 

 gellar rows same throughout; axial filaments somewhat larger and 

 longer, about 30; 30 parabasals: 2400 flagellar in Cryplocercus punc- 

 tulatus. Sexual cycle (Cleveland, 1952). 



R. tarda C. et al. (Fig. 175,/). 130-215 M by 30-70 M . 



Genus Urinympha Cleveland et at. Narrow, slender; flagellated 

 area, smaller than that of the two genera mentioned above; flagella 

 move as a unit; about 24 axial filaments; 24 parabasals; 600 flagella; 



Fig. 174. a, b, Hoplonympha natator, X450 (Light); c, Barbulanympha 

 ufalula, X210 (Cleveland etal.); d, Urinympha talea, X350 (Cleveland 

 et al.); e, Staurojoenina assimilis, X200 (Kirby); f, Idionympha perissa, 

 X250 (Cleveland et al.); g, Teratonympha mirabilis, X200 (Dogiel). 



