THE OPALINID CILIATE INFUSORIANS. 



201 



Selkirk Settlement, Canada. The type infection was taken from a 

 living frog from Raleigh, April, 1915 ; H. H. and C. S. Brimley col- 



lectors. 



Fig. 170. — Opalina pickbeingiIj X 117 diameters ; one drawing shows all the 



NUCLEI IN THE INDIVIDUAI/. 



Meas-urements : A, of a short, hroad individual; B, of a long, slen- 

 der individudi — 



Measurements. 



Length of body , 



Width of body , 



Thickness of body: 



Anterior 



Middle 



Posterior 



Length and breadth of nuclei: 



First 



Second 



Third 



Fourth 



Fifth : 



Width and thickness of disk-shaped endospherule . 



Another 



Cilia line interval: 



Anterior 



Middle 



Posterior 



mm. 

 0.2 

 .103 



0208 



0. 005 X 

 . 0062 X 

 .007 X 

 . 0076 X 

 . 0085 X 

 . 003 X 

 . 0025 X 



,004 

 0045 

 005 

 ,0065 

 ,0066 

 00125 

 0015 



0025 

 0027 

 0038 



mm. 

 0.333 

 .068 



.0158 

 .016 

 . 00168 



83103—23- 



-14 



