302 PROTOZOOLOGY 



blepharoplasts located near the anterior extremity of axostyle, give 

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

 gut. 



0. dimorpha Connell (Fig. 139, a, h). 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; 17ju by 

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

 Arizona. 



Genus Proboscidiella Kofoid and Swezy {Microrhopalodina Grassi 

 and Foa; Kirhyella Ze\iE) . Attached and motile form similar to Ox?/- 

 monas; but multinucleate; 3(?)-4 flagella from each karyomastigont 

 (p. 315); rostellum with filaments which extend posteriorly as axo- 

 styles; in termite gut. 



P. kofoidi Kirby (Fig. 139, c). Average size 66/i by 4Qn; rostellum 

 as long as body; karyomastigonts 2-19 or more (average 8); each 

 mastigont with 2 blepharoplasts from which extend 4 flagella; in 

 Cryptotermes dudleyi. 



Family 8 Dinenymphidae Grassi and Foa 



Genus Dinenympha Leidy. Medium large; spindle form; 4-8 

 flagellar cords adhering to body which are spirally twisted about one 

 turn; the flagella free at the posterior end; axostyle varies from cord 

 to band; pyriform nucleus, anterior, with a large endosome; in ter- 

 mite gut. 



D. gracilis L. (Fig. 140, a). 24-50^ by 6-12/i; body flattened and 

 twisted; ends attenuated; with adhering protophytes; in Reticuli- 

 termes flavipes. 



D. fimhriata Kirby (Fig. 140, b). 52-64^ by 8-18^; 4-8 flagellar 

 cords; with adherent protophytes; axostyle varies in width; in 

 Reticulitermes hesperus. 



Genus Pyrsonympha Leidy. Large; club-shaped, the posterior end 

 is rounded; body surface with 4-8 flagellar cords which are arranged 

 lengthwise or slightly spirally; flagella extend freely posteriorly; 

 blepharoplast at the anterior tip, often with a short process for at- 

 tachment; axostyle a narrow band, may be divided into parts; in 

 termite gut. 



P. vertens L. (Fig. 140, c). About 100-1 50^ long; 4-8 flagellar 

 cords; in Reticulitermes flavipes. 



P. granulata Powell (Fig. 140, d). 40-120^ by 5-35m; 4-8 flagellar 

 cords; in Reticulitermes hesperus. 



