PLATE 32 



Fig. 13. Diagram of the neuromotor apparatus. X 1600. a.c.f., anal cirri 

 fiber; a.f.p., anal fiber plate; m.f., membranelle fiber; m.f.p., membranelle fiber 

 plate; mot., motorium. 



Pig. 14. Anal cirrus detaching from its fiber plate. The cirris has rotated 

 90 degrees on its long axis. X 1450. a.c.f., anal cirri fiber; a.f.p., anal fiber 

 plate; b.p., protoplasmic basal plate; e.g. 2 , large ectoplasmic granules; n.p., 

 needle point. 



Fig. 15. Anal fiber plate with a portion of its attached fiber distorted by 

 the needle point. X 1450. 



Fig. 16. Diagram of a membranelle showing its relation to the membranelle 

 plate. X 1450. b.g., basal granule; c.r., ciliary rootlet; f.p., fiber plate. 



Fig. 17. Dissected portion of disintegrating membranelle fiber plates at- 

 tached to the membranelle fiber. X1450. mf.p., membranelle fiber plate; 

 m.f., membranelle fiber; e.g.,, large ectoplasmic granule; e.g. ls small ectoplasmic 

 granule. 



[468] 



