284 PROTOZOOLOGY 



longer, about 30; 30 parabasals; 2400 flagella; in Cryptocercus 

 punctulatus. 



R. tarda C. (Fig. 132,/). 130-215/x by 30 70m. 



Genus Urinympha Cleveland. 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 ; in gut of Cryptocercus punctulatus. 



U. talea C. (Fig. 131, d). 75-300m by 15-50^. 



Family 4 Staurojoeninidae Grassi 



4 flagellar tufts arise from the anterior end. 



Genus Staurojoenina Grassi. Pyriform to cylindrical; anterior 

 region conical; nucleus spherical, central; 4 flagellar tufts from 

 anterior end; ingest wood fragments; in termite gut. 



S. assimilis Kirby (Fig. 131, e). 105-190^ long; in Kaloter^nes 

 minor. 



Genus Idionympha Cleveland. Acorn-shaped; axostyles 8-18; 

 fine parabasals grouped in 4 areas; pellicle non-striated; nucleus 

 nearer anterior end than that of Staurojoenina; flagellated areas 

 smaller; in gut of Cryptocercus punctulatus. 



I. perissa C. (Fig. 131,/). 160-275^ by 98-155m. 



Family 5 Kofoidiidae Light 



Flagellar tufts composed of 8-16 loriculae (permanently fused 

 bundles of flagella); without either axostyle or parabasal body. 



Genus Kofoidia Light. Spherical; between oval nucleus and 

 bases of flagellar tufts, there occurs a chromatin collar; wood 

 fragments as food; in termite gut. 



K. loriculata L. (Fig. 132, a, h). 60-140^ in diameter; in 

 Kalotermes simplicicornis. 



Family 6 Trichonymphidae Kent 



The body is divisible into three regions; rostellum with caps, 

 flagellated region behind rostellum and non-flagellated area at 

 posterior end; flagellated area 1/3-2/3 of body length; surface of 

 anterior portion differentiated into 1-2 thick ectoplasmic layers, 

 densely traversed by numerous flagella; an "axial core" or "head 

 organ" at anterior tip; no cytostome; a single nucleus; flagella 

 numerous and long, arranged in longitudinal rows ; multiplication 

 by simple longitudinal fission; inhabitants of termites and wood- 

 roach. 



