286 PROTOZOOLOGY 



tudinal rows on bell; in termite gut. Many species. Cleveland and 

 his associates (1934) observed that encystment takes place in 

 species inhabiting the wood-roach, Cryptocercus 'punctulatus and 

 that it occurs only at the time of moulting of the host roach, 

 namely once a year. 



T. campanula Kofoid et Swezy (Figs. 56; 132, c). 144-313^4 by 

 57-144;u; wood particles are taken in by posterior region by a 

 method of Rumbler's "import" (Cleveland). In Zootcrmopsis 

 angusticollis, Z. nevadensis and Z. laticeps. 



T. agilis Leidy (Fig. 132, d). 55-1 15m by 22-45yu; in Reticuli- 

 termes flavipes, R. lucifugus, R. speratus, R. flaviceps, R. hesperus, 

 R. tibialis. 



T. grandis Cleveland. 190-205iu by 79-88m; in Cryptocercus 

 punctualatus. 



Genus Pseudotrichonympha Grassi. 2 parts in anterior end as 

 in Trichonympha; head organ with a spherical body at its tip and 

 surrounded by a single layer of ectoplasm; bell covered by 2 

 layers of ectoplasm; nucleus lies freely; body covered by slightly 

 oblique rows of short fiagella; in termite gut. 



P. ^rassu Koidzumi. In Coptotermes formosanus; spindle-form; 

 200-300/x by 50-120m. 



Genus Deltotrichonympha Sutherland. Triangular; with a 

 small dome-shaped "head"; composed of 2 layers; head and neck 

 with long active fiagella; body fiagella short, arranged in 5 

 longitudinal rows; fiagella absent along posterior margin; nucleus 

 large oval, located in anterior third; cytoplasm with wood chips; 

 in termite gut. One species. 



D. operculata S. Up to 230^ long, 164/x wide, and about 50^ 

 thick; in gut of Mastotermes darwiniensis; Australia. 



Family 7 Eucomonymphidae Cleveland 



All or most of body covered with fiagella that arise from basal 

 granules arranged in nearly longitudinal rows; fiagella in 2 dif- 

 ferent groups, and never in 3 groups as in Trichonymphidae; with- 

 out peri-nuclear arrangement of parabasals. 



Genus Eucomonympha Cleveland. Body covered with fiagella 

 arranged in 2 (longer rostral and shorter post-rostral) zones; 

 rostral tube very broad, filled with hyaline material; nucleus at 

 base of rostrum; in gut of Cryptocercus punctulatus. 



E. imla C. (Fig. 132, e). 100-165^ by 48-160^; attached forms 

 more elongate than free individuals. 



