POLYMASTIGINA 267 



H. hatrachorum Alexeieff (Fig. 124, k). Oval or spindle form; 

 8-14/i by 4-8/z; flagella about body length; in gut of Triton 

 taeniatus. 



Genus Protrichomonas Alexeieff. 3 anterior flagella of equal 

 length, arising from a blepharoplast located at anterior end; 

 parasitic. 



P. legeri A. (Fig. 124, I). In oesophagus of the marine fish, Box 

 boops. 



Genus Parajoenia Janicki. Medium large; ends rounded; 3 

 anterior flagella; 1 long trailing flagellum; axostyle stout; para- 

 basal body in 2 parts; Kirby (1937) showed that this genus 

 belongs to Polymastigina; in termite gut. 



P. grassii J. (Fig. 124, m). 29-59^ by 12-33/x; numerous spiro- 

 chaetes, about 15-20/1 long, adherent to anterior and posterior 

 parts of body; in Neotermes connexus; Hawaii. 



Genus Oxymonas Janicki. Oval or pyriform; extensible and 

 retractile rostellum (proboscis) at anterior end; at its base 2 

 groups of 3 flagella; nucleus anterior; bundle of axial filaments; in 

 termite gut. 



0. projector Kofoid et Swezy (Fig. 124, n). 12-40^ long; in 

 Kalotermes perparvus. 



0. dimorpha Connell. Subovoid; delicate pellicle; axostyle pro- 

 truding; a pair of long anterior flagella from 2 blepharoplasts 

 connected by rhizoplast; nucleus anterior, Feulgen negative; 

 when attached to intestine, rostellum elongate, flagella disappear; 

 xylophilous; 165-195/x by 14-17^; in Neotermes simplicicornis ; 

 California and Arizona. 



Genus Streblomastix Kofoid et Swezy. Elongate, spindle; 

 4 anterior flagella; nucleus elongate spindle; with spiral ridges; 

 in termite gut. 



S. strix K. et S. (Fig. 124, o). 200-530m by 20-80m; in Zooter- 

 mopsis angusticollis. 



Genus Devescovina Foa. Oblong; axostyle rigid, extends to 

 posterior end; 3 anterior flagella and one long trailing flagellum; 

 parabasal body; in termite gut. 



D. lemniscata Kirby (Fig. 125, a). 12-41ju by 7-15ju; in Crypto- 

 termes hermsi. 



Genus Pseudodevescovina Sutherland. Relatively large and 

 stout; a single anterior flagellum; without (Sutherland) or with 

 one comparatively short trailing flagellum (Kirby); axostyle 



