266 



PKOTOZOOLOGY 



Fig. 124. a-c, Chilomastix mesnili, X1350 (Kudo); d, Callimastix 

 frontalis, XlSOO (Braune); e, C. equi, XHOO (Hsiung); f, Polymastix 

 melolonthae, X540 (Hamburger); g, Eutrichomastix serpentis, X1450 

 (Kofoid and Swezy) ; h, E. hatrachorum, X 1350 (Dobell) ; i, E. axostylis, 

 X2000 (Kirby); j, Hexamastix termopsidis, X2670 (Kirby) ; k, H. 

 hatrachorum, XlOOO (Alexeieff); 1, Protrichomonas legeri, XlOOO 

 (Alexeieff); m, Parajoenia grassii, X890 (Kirby); n, Oxynionas pro- 

 jector, X1260 (Kofoid and Swezv); o, Streblomastix strix, XlOBO 

 (Kidder). 



Genus Hexamastix Alexeieff. Body similar to Eutrichomastix, 

 but with 6 flagella, of which one trails; axostyle conspicuous; 

 parabasal body prominent. 



H. termopsidis Kirby (Fig. 124, j). Ovoidal or pyriform; S-ll/i 

 long; flagella 15-25ju long; in gut of Zootermopsis angusticollis 

 and Z. nevadensis ; California. 



