CILIATE FIBRILLAR SYSTEMS 



235 



Method (whole mounts and sections) 



Fixatives: Schaudinn's, made up in 95 -percent ethyl alcohol, followed by 



prolonged treatment with turpentine. 

 Stains: Iron haematoxylin ; solution of acid fuchsin and methyl green. 



Dileptus gigas (Visscher, 1927). — From a rod-like motorium found 

 near the base of the gullet, several sets of fibrils extend to different 

 parts of the body, as follows: (1) one set supplies the wall of the fun- 

 nel-shaped gullet, (2) two more distinct fibrils course anteriorly along 

 the proboscis, one on either side of a row of trichocysts; and (3) a set 

 of branching finer fibrils spreads posteriorly over the body, where they 



mot. 



f, fib. 



Figure 83. Dileptus gigas. Neuromotor apparatus (camera drawing). (Visscher, 

 1927.) 



a. iib. — anterior fibril f. fib. — fine fibrils i. fib. — inner fibrils 



mot. — motorium o. fib. — outer fibrils t. — trichocysts 



