POLYMASTIGINA 315 



T. compressa K. (Fig. 147, i). 24-33m by 10-16^; flagella of differ- 

 ent lengths; standing water. 



Genus Urophagus Klebs. Somewhat similar to Hexamita; but 

 a single cytostome; 2 moveable posterior processes; ho lo zoic; stag- 

 nant water. 



U. rostratus (Stein) (Fig. 147, j). Spindle-form; 16-25ju by 6-1 2^. 



Suborder 3 Polymonadina 



This group includes forms which inhabit the intestine of various 

 species of termites, most probably as symbionts. The majority are 

 multinucleate. Each nucleus gives rise to a basal bod}^ (from which 

 flagella extend), a parabasal body, and an axial filament. Janicki 

 called this complex karyomastigont, and the complex which does not 

 contain a nucleus akaryomastigont. 



Genus Calonympha Foa. Body rounded; large; numerous long 

 flagella arise from anterior region; numerous nuclei; karyomastigonts 

 and akaryomastigonts; axial filaments form a bundle; in termite 

 gut. 



C. grassii F. (Fig. 149, a). 69-90/i long; in Cryptotermes grassii. 



Genus Stephanonympha Janicki. Oval, but plastic; numerous 

 nuclei spirally arranged around anterior end; karyomastigonts; axial 

 filaments form a bundle; in termite gut. 



S. nelumhium Kirby (Fig. 149, b). 45)u by 27^; in Cryptotermes 

 hermsi. 



Genus Coronympha Kirby. Pyriform with 8 or 16 nuclei, arranged 

 in a single circle in anterior region; 8 or 16 karj^omastigonts; axo- 

 style distributed; in termite gut. 



C. clevelandi K. (Fig. 149, c). 25-53^ by 18-46^; in Kalotermes 

 clevelandi. 



Genus Metacoronympha Kirby. Pyriform; one hundred or more 

 karyomastigonts arranged in spiral rows meeting at the anterior 

 end; each mastigont is composed of nucleus, blepharoplast, cresta, 

 3 anterior flagella, a trailing flagellum, and an axostyle; axostyle as 

 in the last genus; in termite gut. 



M. senta K. (Fig. 149, d). 22-92^ by 15-67m; karyomastigonts 

 about 66-345 (average 150) in usually 6 spiral rows; in Kalotermes 

 emersoni and four other species of the genus. 



Genus Snyderella Kirby. Numerous nuclei scattered through the 

 cytoplasm; akaryomastigonts close together and extend through the 

 greater part of peripheral region; axial filaments in bundle; in ter- 

 mite gut. 



