OPALINID CILIATE INFUSORIANS — METCALF 



531 



These are from 



width 3.4; dividmg nucleus, length 9.7, width 2.9 

 Rangoon, Burma. 



In shape and size of body and in shape and size of resting and 

 dividmg nuclei the parasite agrees with 0. malaysiae from Rana 

 labialis from Siam, but the material is scant, and the preservation 

 does not allow detailed study and I am not definitely assigning the 

 Opalinas to this species though probably they are the same. 



OPALINA JAPONICA Suglyama 



Figure 97 



Host: Cacopus sy stoma (Schneider). 



Two specimens of this gastrophrynid were sent me from Madras, 

 India. Both were infected with a thin Opalina that resembles 0. 



Figure 96. — Opalina malaysiae (7) from tadpole of 

 Microhyla ornata, X 453. 



Figure 97.— Opalina japonica Sugiyama 

 from Cacopus systoma, X 505. 



japonica except that it is even thinner than this last species. This 

 seems not a sufficient indication to justify even subspecific distinc- 

 tion. The host and the locality are new for this species. 



Measurements, in microns: Body 110 by 60, 160 by 88; nuclei 

 3.7, 4, 4.5; length of cilia 7.2; very thin. 



OPAUNA JAPONICA Sugiyama 



Figure 98 



Host: Rana limnocharis Wiegmann, from Trihur, Cochin Prov- 

 ince, southern India, sent by the Madras Museum. The animals of 

 this abundant infection resemble the Java specimens, from the same 

 frog, which I formerly doubtfully assigned to 0. japonica. Study of 

 this Indian infection confirms the conclusion, the posterior ends of 

 the Japanese and the Indian forms, with their points and often ex- 

 aggerated tails, forming a rather remarkable resemblance. 



