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PROTOZOOLOGY 



Family 7 Oxymonadidae Kirby 



Genus Oxymonas Janicki. Attached phase with a conspicuous 

 rostellum, the anterior end of which forms a sucking-cup for attach- 

 ment; pyriform. In motile phase, rostellum is less conspicuous; 2 

 blepharoplasts located near the anterior extremity of axostyle, give 

 rise to 2 flagella each; axostyle conspicuous; xylophagous; in termite 

 and woodroach; sexual reproduction in some (Cleveland, 1950). 



Fig. 159. a, b, Oxymonas dimorpha (Connell) (a, a motile form, X900; 

 b, an attached aflagellate form, X460); c, 0. grandis, X265 (Cleveland); 

 d, Proboscidiella kofoidi, X600 (Kirby). 



0. dimorpha Connell (Fig. 159, a, b). Subovoid; delicate pellicle; 

 axostyle slightly protruding; a pair of long anterior flagella from 

 2 blepharoplasts, connected by rhizoplast; nucleus anterior. When 

 attached to intestine, rostellum elongate, flagella disappear; 17m by 

 14/z to 195/x by 165m; in Neotermes simplicicornis; California and 

 Arizona (Connell, 1930). 



0. grandis Cleveland (Fig. 159, c). Body 76m by 31m to 183m by 

 79m; rostellum varies 30-200m in length; nucleus without an endo- 



