HENNEGUYA. 345 



291. Henneguya ophiocephali Chakravarty. 



■fHenneguya sp., Ray, 1933 b, p. 349. 

 \Henneguya ophiocephali, Chakravarty, 1938. 



Cysts spherical, attached to the gill-filaments of the infected 

 host. Polysporous. Spores ovoidal or oblong, with the 

 anterior end rounded and broader and the posterior 

 tapering and forming a tail which is bifurcated along its 

 entire length. Polar capsules elongate, with anterior end 

 pointed and provided with a coiled filament, one capsule 

 shghtly smaller than the other. An iodinophilous vacuole is 

 present. 



Dimensions. — Cysts about 2 mm. in diameter ; spore 

 16-4-20-5|Lt in length, 6-15 /x in breadth, tail 28-32 )[a ; polar 

 capsules 6-18.U, by 2-06)u, and 5-18/u, by 2-06/Lt respectively; 

 polar filaments 26-32/*. 



Remarks. — Description is based on Chakravarty's paper in 

 manuscript. 



Habitat. — Gills and muscles of Ophiocephalus punctatus 

 Bloch : Bengal, Calcutta. 



292. Henneguya otolithi Ganapati. 



■fHenneguya sp., Ganapati, 1936, p. 204 ; 1938, p. 155. 



The affected area presents numerous white pustules, which 

 are cysts containing the spores. Trophozoite shows a clear 

 differentiation into ectoplasm and endoplasm, and vegetative 

 and generative nuclei are present. Pansporoblasts originate 

 by divisions of single generative cells. Each pansporoblast 

 gives rise to two spores. Autogamy occurs. The phenomenon 

 of dififuse infiltration seems to be much pronounced, bringing 

 about considerable pathological changes. 



Remarks. — This is the second record of a Myxosporidian 

 infecting the heart, the previous one being that by Keyssehtz 

 of Myxoholus cordis from the ventricle of Barbus fluviatilis. 



Habitat. — Tissue parasite in the bulbus arteriosus of Otolithus 

 ruber (Bl. Schn.) and 0. maculatus (Kuhl & Hass.) : Madras, 

 Madras. 



