596 



PROTOZOOLOGY 



Fig. 270. a, Ophisthotrichum janus, X370 (Dogiel); b, Cunhaia 

 curvata, X670 (Hasselmann); c, Cydoposthium bipalmatum, X300 

 (Bundle); d, C. dentiferum, X270 (Hsiung); e, Spirodinium equi, 

 X270 (Hsiung); f, Triadiniuvi caudatum, X300 (Hsiung); g, T. 

 minimum, X440 (Hsiung); h, Tetratoxum unifasciculatum., X280 

 (Hsiung). 



Genus Cunhaia Hasselmann. Cytostome near anterior end, 

 ^\ith adoral zone; dorsal zone on 1/3 of anterior-dorsal surface; 

 2 contractile vacuoles; skeleton (?); in caecum of guinea pig, 

 Cavia aperea. One species. 



C. curvata H. (Fig. 270, h). 60-80^ by 30-40/^; in Brazil. 



Family 5 Cycloposthiidae Poche 



Pellicle firm and body rigid ; zones of membranellae at anterior 

 and posterior ends; more or less compressed; cytopharynx short 



