TOXOPLASMA. 207 



stained dark blue and the nucleus is a compact chromatic 

 dot, sometimes vacuolated, and surrounded by a white 

 halo : in the other type the cytoplasm is stained light violet, 

 rather rosy, and the nucleus is compact or vacuolated, some- 

 times constituted by an irregular spirematic thread, never 

 showing the vacuolar space round it. The former are inter- 

 preted as female and the latter as male schizonts. Multiplica- 

 tion takes place by repeated binary fission. Merozoites pro- 

 duced also show the same cytoplasmic differentiation as the 

 parent schizonts. 



Remarks. — The parasite was found only in smears from the 

 lung, and was not found in the peripheral blood or in smears 

 from other organs. 



Habitat. — Lung-smears of Fulica atra Linn. : Portuguese 

 India, lakes of Carambolin and Taleigao. 



144. Toxoplasma spi 



fA parasite in the sparrow, J. R. Adie, 1908, p. 176. 

 Toxoplasma avium, Castellani & Chalmers, 1918, p. 489. 

 Toxoplasma sp., Wenyon, 1926, pp. 1042, 1048 ; Knowles, 1928, 

 p. 465. 



Remarks. — Wenyon (1926) regards the form as undoubtedly 

 a species of Toxoplasma. 



Habitat. — Blood of the sparrow, Passer sp. : Punjab. 



145. Toxoplasma sp. 



■\Toxoplasm,a sp., Plimmer, 1916 a, p. 295. 



^Toxoplasma sp., Wenyon, 1926, pp. 1043, 1048 ; de Mello, 1937 a, 

 p. 111. 



Habitat. — Blobd and exudation from the lungs of the chat, 

 Saxicola caprata Linn., from India, in the Zoological Gardens, 

 London. 



Doubtful Species. 



146. Toxoplasma (?) pyrogenes Castellani, 1914. (Fig. 103.) 



■\Toxoplasma pyrogenes, Castellani, 1914 6, pp. 113-14, 2 pis. 

 Some tmknown protozoon, Plate, 1914. 

 Contaminating organisms of a vegetable nature, Wenyon, 1923, 



pp. 527-50, 855, 1 pi. ; 1926, p. 1048, fig. 433, A-C. 

 Toxoplasma pyrogenes, Knowles, 1928, p. 465 ; Reichenow, 1929, 



p. 965 



Intracellular, round, ovoid or pyriform in shape, and about 

 6)u, in diameter. A second form, 12/x in diameter, and con- 

 taining several chromatin granules, has been described as 

 a schizont. 



Remarks. — ^Wenyon (1923) discussed the probable nature 

 of this form and came to the conclusion that what had been 



