THE OPALINID CILIATE INFUSOKIANS. 



117 



ZELLERIELLA MACRONUCLEATA (Bezzenberger) . 



Opalina macronucleata Bezzenbeeger (1904). 



Host. — Bufo inelcmostictus Schneider, from "Asia." I have had 

 no material of this species from this host, so quote data given by 

 Bezzenberger. 



(1";/"'""% 



"^ b 



Fig. 82. — Bellerieli^ macronucleata, X 952 diameters. (After Bezzenberger.) 



a 



^i^. 

 ^T.^ 



5jQ- 



d 



f 



Fig. 83. — Zelleriella macronucleata, nuclei in different stages of mitosis, X 

 ABOUT 2,000 diameters. (After Bezzenberger.) 



Measurements of an ordinary individual with resting nuclei. — 

 Length of body, 0.0631 mm. ; width of body, 0.04 mm. ; thiclmess of 



