THE OPALINID CILIATE IXFUSORIANS. 



207 



Many individuals in these infections are comma-shaped, others are 

 more ohtrigona-like. The nuclei are much larger than in 0. vir- 



a 



Fig. 17G. — Opalina virguloidea magninucleata, x 117 diameters. Each group of 



FIGURES IS FROM A DIFFERENT INDIVIDUAL HOST AND SHOWS THE RANGE OF SIZE AND 

 FORM IN ITS INFECTION, ONE DRAWING IN GROUP A SHOWS ALL THE NUCLEI IN THE 

 CELL. 



guloidea from Hyla eximia. The best expression of the conditions 

 observed seems to be to class these forms as a subspecies of O. vir- 

 guloidea. 



