OPALINID CILIATE INFUSORIANS — METCALF 



501 



120; nuclei 9.9 by 9.9, daughter nucleus 9.6 by 7, dividing nucleus 

 13.8 by 7.1 ; cilia line interval in front 2.2. 



CEPEDEA BORNEONENSIS Metcalf 



Figure 59 



Host: Bujo jerboa Boulenger, from Trong, Lower Siam. One host 

 (U.S.N.M. No. 24041), 28 mm. long, was abundantly infected. 



The Siamese Cepedeas from this host are considerably flattened and 

 are larger than the Bornean individuals. Their nuclei are for the 



FiGUBE 69.— C«p«(Jeo borneonen^s Metcalf: a, X U7; 6, X 1010. 



most part elongated but less so than in the specimens from Borneo. 

 In all the specimens from both locaUties the nuclei mostly lie wth 

 their long axis longitudinal. More or less flattening is not rare in the 

 genus Cepedea, but this occurs in the elongated species more than m 

 forms of this type. 



Measurements, in microns: Body 100 by 38, 80 by 30, 60 by 29, 

 100 by 42; nuclei of last specimen 4.6 by 4.6, 6.3 by 2.9, 5 by 3.8, 

 9.9 by 3, 3.1 by 3.1; length of cilia in same specimen 9.8; ciUa hne 

 interval 2. 



