CILIATE FIBRILLAR SYSTEMS 



249 



mologous with the 'continuation tube' of the "subpharyngeal canal' de- 

 scribed by Higgins (1929) in N. cordiformis" (Kirby, 1932, p. 298). 

 Whether or not this strand is a part of the neuromotor system is an 

 open question. 



Fibrils interpreted as nior phonemes are as follows: (1) those extend- 



comm 



. fib. 



tr. perist. fib. 



a. n. c. 

 c.b.b. 



lai.sui. 

 n. env. 



per. pehst fib. 



cir. fib. 

 p. /. ph. fib. 



mob. 

 sk f fib. 



-ph. term. 

 _ re. fib. 



Figure 89. Nyctotherus hylae, fibrillar system, diagrammed. (Rosenberg, 1937.) 



ant. neur. cen. — anterior neuromotor cen- 

 ter 

 c. b. b. — ciliary basal body 

 c. 1. — ciliary line 

 ca. fib. — caryophore fibril 

 cir. fib. — circumpharyngeal fibril 

 comm. fib. — commissural fibril 

 1. ph. fib. — longitudinal pharyngeal fibril 

 lat. sut. — lateral suture 

 mot. — motorium 



n. env. — nuclear envelope 



p. 1. ph. fib. — posterior longitudinal 

 pharyngeal fibril 



p. ph. b. — post-pharyngeal bundle 



ph. term. — pharyngeal terminal 



per. perist. fib. — peripheral peristomal fi- 

 bril 



re. fib. — reversal fibrils 



sh. s. fib. — shelf supporting fibrils 



tr. perist. fib. — transverse peristomal fibril 



