512 



PROCEEDINGS OF THE NATIONAL MUSEUM 

 CEPEDEA RUBRA (Carini) (?) 



Figure 70 



VOL. 87 



Host: Tadpole of Leptodadylus ocellatus (Linnaeus), from Manguin- 

 hos, Kio de Janeiro, Brazil. 



Three stages of development of this opahnid are shown in the draw- 

 ings: The youngest, a, in a Protoopalina axonucleata condition; 6, a 

 somewhat older larva whose nuclei are beginning to be irregularly 

 distributed through the cytoplasm; and c, approaching the adult 



Figure 70.— Cepedea rubra (Carini) (?) from tadpole of Leptodactylus ocellatus, X 820. 



condition. The small size of the nuclei suggests resemblance^ to 

 C. rubra rather than to C. longa, and this is emphasized when we 

 remember that in the development of Cepedea the young individuals 

 have proportionally larger nuclei than the old. C. dimidiata ipara- 

 guensis] Metcalf has still smaller nuclei, much smaller. But the 

 assignment of these larvae to the species rubra without seeing an 

 adult is of most doubtful validity, but it seems the most probable 

 of the three species known to occur in the region. 



