624 PROCEEDINGS OF THE NATIONAL MUSEUM vol.87 



storage or synthesis of food materials. In addition to the bodies 

 mentioned above, she found very fine granules in the endoplasm, 

 which are always spherical and very similar in size, considered by her 

 to be mitochondria. 



De Mello, 1932, described among other opalinids from Malabar one 

 new species: Ce'pedea subcylindrica from Bufo melanostictus. [The 

 description is too scant.] 



Nie, 1932, reported the presence of four species of opalinids in 

 Rana limnocharis Gravenhorst, found in Nanking, China, three of 

 which were new: Protoopalina limnocharis, Opalina undulata, and 0. 

 acuminata. 



Carini, 1933b and c, described two new species of Zelleriella from 

 Brazil: Z. falcata in Engy stoma ovale and Z. cornucopia in Lepto- 

 dactylus ocellatus. 



Ivanic, 1933, described mitosis in Cepedea dimidiata Stein in Bufo 

 vulgaris Laurenti. C. dimidiata has numerous typical vesicular 

 nuclei and disk-shaped bodies. The vesicular nuclei have a mem- 

 brane, a plastin karyosome, and a ball of Hnin on which are scattered 

 chromatin granules. The chromatin granules are arranged in 6-8 

 longitudinal rows [chromosomes] on the spindle and divide. Accord- 

 ing to Ivanic the "macrochromosomes" are only clumps of plastin 

 karyosome; the "microchromosomes" are the rows of chromatin 

 granules on the spindle. Ivanic believes that the discoid bodies are 

 small nuclei with the same structure and behavior in division as the 

 large nuclei [probably a mistaken observation]. The discoid bodies 

 divide by mitosis [an observation which needs to be confirmed] and 

 are present throughout the life cycle. 



Zingher, 1933, reported the presence of fat inclusions in Opalina 

 ranarum. He noted that in the smaller individuals the fat bodies are 

 much larger and more nmnerous than those in the larger specimens. 

 In the larger specimens the fat bodies are more uniformly distributed, 

 whereas in the smaller specimens there is an accumulation of these fat 

 bodies at one end of the body. In the opalinids found in tadpoles 

 these fat bodies are entirely lacking. 



Stabler, 1933, was the first to identify correctly the endamoebae 

 parasitic in the opalinids that had previously been erroneously thought 

 to be a new genus — '^Brumptina" by Carini (1933a). Stabler found 

 both trophozoites and early cystic stages of this Endamoeba in the 

 Zelleriellas from Arizona and Panama. The amoebae rest in small 

 pockets in the endoplasm of the opalinid. In any one opalinid, all 

 the amoebae were found in very nearly the same stage of development, 

 i. e., all cysts or all trophozoites. [Stabler's report was independently 

 confirmed by Carini and Reichenow, 1935; the latter two investigators 

 described the amoebae in greater detail]. This is but an abstract. 

 See Stabler and Chen, 1936, for full publication. 



