CHILOMASTIX MESNILI 



623 



which runs along the left margin of the cytostomal cleft, round its posterior 

 end, and up the right side for a short distance. From the right blepharo- 

 plast another fibre passes along the right margin of the cytostomal cleft 

 for about three-quarters of its length to a point near which the other 



Fig. 256. — Chilomastir, mesnili from the Human Intestine (x 2,000). (7-8, 



AFTER WeNYON, 1914; 9-10, AFTER WeNYON AND O'CONNOR, 1917.) 



1-6. Ordinary forms as seen in stained films. 



7-8. Small gfobula-r forms in which the cytostomal groove is not apparent. 

 9-10. Drawings of living spacimens, showing the twisted appearance of the posterior region of 

 the body. ' 11-14. Encysted forms in stained films. 



marginal fibre terminates. The six blepharoplasts are usually so closely 

 packed together that they appear as a single deeply staining body. The 

 mouth or cytostome is at the posterior end of the cytostomal cleft at the 

 point where the marginal fibre turns round the posterior margin of the 

 cleft. 



