174 HANDBOOK OF PROTOZOOLOGY 



Genus Pseudotrichonympha Grassi. Two parts in the an- 

 terior end as in Trichonympha. The head organ with a spherical 

 body at its tip and is surrounded by a single layer of ectoplasm; 

 the bell is covered by two layers of ectoplasm. The nucleus lies 

 freely. Body covered by spiral rows of short flagella. 



Pseudotrichonympha grassii Koidzumi. In the termite, Cop- 

 totermes formosanus. 



Genus Gymnonympha Dobell. Body oval or pyriform, but 

 plastic. A spherical body at the anterior end, around the base 

 of which is a ring of flagella. Flagella about half as long as the 

 body. Posterior one-third shows longitudinally striated pellicle. 

 Nucleus near the anterior end. 



Gymnonympha zeylanica Dobell. In the termite, Kalotermes 

 militaris. 



Genus Leidyopsis Kofoid and Swezy. Ectoplasmic differen- 

 tiation only in the anterior third, the remaining part is covered 

 by a thin .pellicle. The axial core bears a hemispherical tip. 

 Nucleus anterior. Long flagella arise from the anterior third of 

 the body. Very similar to Gymnonympha. 



Leidyopsis sphaerica Kofoid and Swezy (Fig. 66, g). In the 

 termite, Termopsis augusticollis . 



Genus Leidyonella Frenzel. Body large Anterior end is 

 pointed. Flagella as long as the body. Pellicle with longitudinal 

 striation. 



Leidyonella cordubensis Frenzel. In an Argentine termite, 

 Eutermes inquilinus. 



Family 8 Cyclonymphidae Reichenow 

 ( = Tetratonymphidae Koidzumi) 



Body large and elongated. It is transversely ridged, and 

 presents a metameric appearance. Each ridge with a single row 

 of flagella. No cytostome. The anterior end is complex, contain- 

 ing a nucleus. Asexual reproduction by longitudinal fission. 



Genus Cyclonympha Dogiel ( = Tetratonympha Koidzumi). 

 With the characters of the family. 



Cyclonympha strohila Dogiel ( = Tetratonympha mirahilis 

 Koidzumi) (Fig. 65, c). In the termites of Japan. Body 110 to 

 170 microns long. 



