OPALINID CILIATE INFUSORIANS — METCALF 



519 



CEPEDEA LONG A MACRONUCLEATA. new Rubspedea 



Figure 77, 78 



Type: U.S.N.M. No. 22642. 



Host: Rana vittigera Wiegmann,* from Manila, Philippine Islands, 

 four specimens, three uninfected, the fourth abundantly infected 

 (U.S.N.M. No. 39175), 44 mm. long; also a specimen from Guijulugan, 

 Negros Island (U.S.N.M. No. 68655), 44 mm. long, very heavily 

 infected. 



Measurements, in microns: Body (a) 800 by 60, (6) 166 by 55, 

 (c) 70 by 18.8; other measurements (d): Width of body 46, nuclei 7.6, 



FiGUHB 78.— Larvae of Cepedea longa macronudeata, from tadpoles of Rana vlttigtra, X673. 



9.7 by 7, 8.7 by 5.5, 6.9 by 5, cHia length 8.4, interval between cilia 

 lines 1.7; nucleoli 4. 



In two tadpoles (U.S.N.M. Nos. 39252A and 39252B), 11.5 and 

 12 mm. long, respectively, were found abundant larval Cepedeas 

 (fig 78) showing a series of stages in development. The unmucleate 

 and binucleate ones are essentially Protoopalinas. As the nuclei 

 increase in number they remain m a line down the axis of the body, 



< Perhaps equivalent to R. cancricora of the Malay Archipelagi 



