90 



THE TRICHOMONADS 



Fig. 8. Trichomonads of swine. A. Trtlrichoiiionas siiis. X 7700. B. Trilriclioiii- 

 onas rotunda. X 5100. C. Trichomonas buUrexi. X 5700. (From Hibler 

 et ai., 1960) 



11.3 by 3.4^1. Buttrey described a cyto- 

 stome, but Hibler et al. did not see one. 

 The 3 anterior flagella are about equal in 

 length, 7 to 17 /i long with a mean of about 

 12.6^L, and end in a round to spatulate 

 knob. The blepharoplast is composed of 

 several granules. The undulating mem- 

 brane runs the full length of the body and 

 has 4 to 6 subequal folds. Its marginal 



filament continues as a posterior free fla- 

 gellum 5 to 11 ji long. An accessory 

 filament is present. The costa runs the 

 full length of the body, and fine subcostal 

 granules are present. The axostyle is a 

 hyaline rod 0. 6 jj. in diameter with a bulb- 

 ous capitulum 1. 7 p. in diameter. It ex- 

 tends 0. 6 to 1. 7fi beyond the body as a 

 cone-shaped projection narrowing abruptly 



