168 HANDBOOK OF PROTOZOOLOGY 



rounds, or occurs near, the nucleus. Asexual reproduction by 

 longitudinal division. Inhabitants in the intestine of termite. 



Genus Holomastigotes Grassi. Body small and spindle- 

 shaped. Few spiral rows reach from the anterior to the pos- 

 terior end. The nucleus is located near the anterior end and is 

 surrounded by a mass of dense cytoplasm. Nutrition by ab- 

 sorption of fluid material. Several species. 



Holomastigotes elongatiim Grassi (Fig. 64, a). In the intes- 

 tine of termites. Widely distributed. Several subspecies. 



Genus Holomastigotoides Grassi. Body large and spindle- 

 shaped. Spiral rows of flagella as in the last genus, but more 

 numerous (12 to 40 in number). A mass of dense cytoplasm 

 surrounds the nucleus. Nucleus ovoid. Four species. 



Holomastigotoides hartmanni Koidzumi (Fig. 64, h). Body 

 50 to 140 microns long. In Coptotermes formosanus. 



Genus Spirotrichonympha Grassi. Body moderately large; 

 elongated pyriform. The flagella are more deeply embedded in 

 the cytoplasm in the anterior region of the body. The mass of 

 dense cytoplasm is conical in form and its base indistinct. 

 Spherical nucleus. 



Spirotrichonympha leidyi Koidzumi (Fig. 64, c). In the ter- 

 mite, Coptotermes formosanus. 



Genus Spirotrichonymphella Grassi. Body small and with- 

 out spiral ridges. Posterior flagella longer. Not wood-feeding. 



Spirotrichonymphella pudibunda Grassi. In an Australian 

 termite, Porotermes adamsoni. 



Genus Microspirotrichonympha Koidzumi. Body small, sur- 

 face not ridged. Spiral rows of flagella only on the anterior half. 

 Between the nucleus and the anterior extremity, there is a tubu- 

 lar structure. A mass of dense cytoplasm surrounds the nucleus. 

 Axial rod may or may not occur. 



Microspirotrichonympha porteri Koidzumi (Fig. 64, d). In 

 the termite, Leucotermes flaviceps. 



Family 2 Lophomonadidae Grassi 



Numerous flagella arise from the anterior end in a tuft. 

 Each flagellum originates in a blepharoplast from which extends 

 inward an axial filament. A single nucleus is located near the 

 anterior end and surrounded by a funnel-shaped space formed 



