PLATE 35 



Pig. 21. Longitudinal section, 15;t thick, through the eytopharynx, show- 

 ing anterior and posterior membranelle zones and indentation of eytopharynx. 

 Mallory's triple connective tissue stain. X 670. 



Pig. 22. Longitudinal section, 15/i thick, through the eytopharynx, show- 

 ing fibers of eytopharynx running from a deeply staining body and peripheral 

 fibers ramifying out from another body. 



Pig. 23. Longitudinal section, 15^ thick, through eytostome and eyto- 

 pharynx, showing anterior membranelle zone, part of posterior membranelle 

 zone and peripheral fibers. Mallory's triple connective tissue stain. X 356. 



Pig. 24. Diagonal section, 2.5fi. thick, through the eytostome and eyto- 

 pharynx, showing cilia and ' ' ciliary rootlets. ' ' X 1160. 



Fig. 25. Cross-section, 2.5^ thick, showing cilia, "ciliary rootlets," also 

 trichocysts and fibers running from them into the endoplasm. X 1160. 



Pig. 26. Showing anterior face of eytopharyngeal fibers and peristomal 

 fibers extending obliquely eaudad into the region of the posterior membranelle 

 zone and into the endoplasm, also the ciliary lines of part of the oral and right 

 sides with the ciliary suture. X 356. 



Pig. 27. View of right side, showing aboral trichocyst whorl and part of 

 oral trichocyst whorl. X 357. 



Pig. 28. View of aboral side, showing aboral whorl of trichocysts. X 350. 



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