PERITRICHIDA 



393 



I 



Fig. 169 a. Trichodina pediculus. X400 (After James-Clark). 



b. Cyclochaeta spongillae. X450 (After Jackson). 



c. C. domergui. X600 (After Wallengren). 



d. Trichodinopsis paradoxa. X200 (After Claparede 

 and Lachmann). 



e. Vorticella campanula. X150. 



f. V. nutans. X150. 



g. V. alba. X150. 



h. V. longifilum. X150. 



i. V. telescopa. X150. 



j. V. quadrangularis. X150. (e-j, after Kent). 



k. Car chesium poly pinum. X 150 (After Stein). 



1. Zoothamnium arbuscula. X150 (After Stein). 



