268 



PROTOZOOLOGY 



stout; parabasal body large; investment of short spirochaetes; in 

 termite gut. 



P. unijlagdlata S. About 65/i by 40-45^ (Sutherland); 52-95^ 

 by 26-60^1 (Kirby); in Kalotermes insularis. 



Genus Monocercomonas Grassi. Small; 4 flagella inserted in 

 pairs in 2 places; 2 directed anteriorly and the other 2, posteriorly; 

 axostyle filamentous; parasitic. 



Fig. 125. a, Devescovina lemniscata, XlOOO (Kirby); b, Monocer- 

 comonas bufonis, X1670 (Alexeieff); c, Pyrsonympha vertens, X260 

 (Comes); d, Dinenyni'pha finihriala, X830 (Kirby); e, Metadevescovina 

 debilis, X1130 (Light); i, Foaina nana, X1670 (Kirby); g, Saccino- 

 bac'ulus ambloaxostylus, XSOO (Cleveland et al.). 



M. bufonis Dobell (Fig. 125, h). Spindle-form; 12-15// long; 

 cysts spherical; in Axolotle, Triton, frogs and toads. 



Genus Pyrsonympha Leidy. Ovoid or ellipsoid; axostyle 

 divided into 2 parts along its posterior portion and the whole 



