324 PROTOZOOLOGY 



B. ufalula C. (Figs. 60; 152, c). 25(>-340m by 175-275m; 50 chromo- 

 somes; flagellated area 36-41^ long; centriole 28-35ju long. 



B. laurabuda C. 180-240ai by 135-1 70m; 40 chromosomes; flagel- 

 lated area 29-33m long; centriole 24-28^ long. 



Genus Rhynchonympha Cleveland. Elongate; number of flagellar 

 rows same throughout; axial filaments somewhat larger and longer, 

 about 30; 30 parabasals; 2400 flagella; in Cryptocercus punctulatus. 



R. tarda C. (Fig. 153, /). 130-215^ by 30-70^. 



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. 152, d). 75-300m by 15-50/i. 



Family 4 Staurojoeninidae Grassi 



Genus Staurojoenina Grassi. Pyriform to cylindrical; anterior 

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

 ior end; ingest wood fragments; in termite gut. 



*Si. assimilis Kirby (Fig. 152, e). 105-190^ long; in Kalotermes 

 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. 152,/). 169-275^ by 98-155/^. 



Family 5 Kofoidiidae Light 



Genus Kofoidia Light. Spherical; flagellar tufts composed of 8-16 

 loriculae (permanently fused bundles of flagella); without either 

 axostyle or parabasal body; between oval nucleus and bases of 

 flagellar tufts, there occurs a chromatin collar; in termite gut. 



K. loriculata L. (Fig. 153, a, h). 60-140/i in diameter; in Kalotermes 

 simplicicornis. 



Family 6 Trichonymphidae Kent 



Genus Trichonympha Leidy {Leidyonella Frenzel; Gymnonympha 

 Dobell; ? Leidy opsis Kofoid and Swezy). Anterior portion consists 

 of nipple and bell, both of which are composed of 2 layers; a distinct 

 axial core; nucleus central; flagella located in longitudinal rows on 

 bell; in termite gut. Many species. Cleveland and his associates 

 (1934) observed that encystment takes place in species inhabiting 

 the woodroach, Cryptocercus punctulatus and that it occurs only at 

 the time of moulting of the host roach, namely once a year. 



