A new species of histozic amoeba,Malamoeba indica parasitic in the epithelial cells of the midgut and the lumen of the Malpighian tubules ofPoecilocera picta is described. The trophozoites reach a maximum size of 13·5×7·0 m and divide by binary fission after the endosome breaks down into chromatin masses. The cysts are ellipsoid with an outer thin refractile wall and measure 14·5×8·6µm in the fresh condition and 13·5×7–5µm in the fixed and stained condition.
Two new species of microsporidians,Nosema limbata n. sp. andThelohania limbata n. sp. from the adipose tissue of the larvae ofTramea limbata collected from the dairy farm area, Visakhapatnam and the Andhra University Campus at Waltair respectively are described and their systematic position discussed.