THE OP.\LIXID CILIATE INFUSOIUANS. 



159 



by 0.004 mm., fourth nucleus 0.0055 mm. by 0.0032 mm. ; length and 

 Avidth of endospherule, first 0.0013 mm. by 0.0009 mm., second 0.0019 

 mm. by 0.0011 mm. ; cilia line interval, anterior 0.00166 mm., middle 

 0.00383 mm. 



The general form of the body and the appearance of the nuclei of 

 this Cepedea, in spite of its being very thin in front, suggests com- 

 parison with C. occidentalism C. pulchra, and its subspecies japonica. 

 In the posterior part of the body G. -flondensis is nearly as thick as 

 broad, but in front it is much thinner. The Oi)alinae have bodies 

 of nearly uniform thickness throughout. 



CEPEDEA BORNEONENSIS, new species. 



Type. — United States National Museum Cat. No, 16517. 



Host. — Bufo jerboa Boulenger, one good infection, from United 

 States National Museum specimen No. 33880, 38 mm. long, from 

 western Borneo; F. Sumichrast, 

 collector. 



Dimensions of an average indi- 

 vidual. — Length of body 0.0525 

 mm.; width of body 0.0153 mm.; 

 length of nucleus 0.004 mm. ; width 

 of nucleus 0.0022 mm. 



This very small Cepedea is 

 rounded. Its ellipsoidal nuclei are large compared with the size of 

 the body and they lie with their long axes parallel, or nearly parallel, 

 to the long axis of the body. Its cilia seem to be very short, but it 

 may be they are not well enough preserved to show their normal 

 length. This seems a well demarcated species. 



CEPEDEA FUJIENSIS, new species. 



Type. — United States National Museum Cat. No. 10522. 



Host. — Bufo formosus Boulenger, one very scant infection of well 



Fig. 126. 



-Cepedea borxeoxensis, 

 1,000 diameters. 



spindle-shaped, with both ends 



Fig. 127. — Cepedea fujibxsis, X 460 diameter.s. 



preserved Opalinids, from United States National Museum specimen 

 No. 34324, 134 mm. long, from Fuji, Japan, August, 1898; A. Owston, 

 collector. 



