HYPERMASTIGINA 



319 



Genus Holomastigotoides Grassi and Foa. Large; Spindle-shaped; 

 spiral rows of flagella as in the last genus, but more numerous (12-40 

 rows) ; a mass of dense cytoplasm surrounds ovoid nucleus; in termite 

 gut. 



Fig. 150. a, Holomastigotes elongatum, X700 (Koidzumi); b, Holo- 

 mastigotoides hartmanni, X250 (Koidzumi); c, Spirotrichomjmpha leidyi, 

 X400 (Koidzumi); d, S. pulchella, X900 (jBrown); e, Microspirotricho- 

 mjmpha porteri, X250 (Koidzumi); f, M. ovalis, X600 (Brown); g, Macro- 

 spironympha xylopletha, X300 (Cleveland et al.); h, Leptospirony mpha 

 eupora, X1050 (Cleveland et al.). 



H. hartmanni Koidzumi (Fig. 150, b). 50-140^ long; in Copto- 

 termes formosanus. 



Genus Spirotrichonympha Grassi. Moderately large; elongate 

 pyriform; flagella deeply embedded in cytoplasm in anterior region, 

 arising from 1 to several spiral bands; mass of dense cytoplasm coni- 

 cal and its base indistinct; nucleus spherical; in termite gut. 



S. leidyi Koidzumi (Fig. 150, c). In Coptotermes formosanus; 15-50^ 

 by 8-30m. 



S. pulchella Brown (Fig. 150, d). 36-42)u by 14-16^; in Reticu- 

 litermes hageni. 



