OPALINm CILIATE INFUSORIANS — METCALF 



533 



large Opalinas pointed posteriorly like most specimens of 0. japonica 

 and of about the same shapes, but much larger and with larger nuclei. 

 Measurements, in microns: Body 300 by 170, nuclei 4, 5, 5.4, 5.8, 

 length of ciha 11, interval between Imes of cilia 2.1. 



Figure 99.— Opalina japonica javensis, new subspecies, from Nyctixalus margaritifera: a, X 78; 6, X 673. 



Figure m.-OpaUna annandali, new species, from Rana tigrina: a, A group, X 117; 6, X 249; c, a dividing 

 nucleus, X 1010; d and e, X 460. In these figures, as in scire others, the limits of the anterior end of 

 the body, right and left, are indicated each by a dot outside the body contour. 



