164] 



The Classification of Lower Organisms 



Fig. 31. — PoLYMASTAcroA : a, Polymastix Mclolonthae after Swezy (1916). b, 

 Streblomastix Strix x 1,000 after Kidder ( 1929) . c, d, Giardia cnterica after Kofoid 

 & Swezy (1922). Trichomonadina: e, Hcxamastix Tcrmopsidis after Kirby 

 (1930). i' Tricercomitus Termopsidis 2ihtv YJirhy (1930). g, Macrotrichomonas 

 pulchra after Kirby (1938). h. Trichomonas tenax x 4,000 after Hinshaw (1926). 

 i, Pentatrichomonas obliqua after Kirby (1943). j, Snydcrella Tabogae x 500 after 

 Kirby ( 1929) . x 2,000 except as noted. 



