HJSMOPROTEIJS. 227 



Remarks. — The parasite is believed to be responsible for 

 a serious illness which ended fatally. 



Habitat. — Red blood- corpuscles of the peacock, Pavo 

 cristatus Linn. : Bihak, Patna. 



163. Haemoproteus simondi (Castellani&Willey). (Fig. 115). 



■\Hsemocystidium simondi, Castellani & Willey, 1904, pp. 84-5, 

 figs. 10-16; Robertson, 1908, pp. 181-2; Dobell, 1910 a, 

 pp. 68, 69 ; 1910 b, pp. 123-32, pi. vii ; Castellani & Chalmers, 

 1919, p. 516, fig. 173. 

 Hsemoproteus simondi, Wenyon, 1926, pp. 899, 902, 1388 ; Knowles, 

 1928, p. 378 ; Reichenow, 1929, pp. 978-9, fig. 949. 

 ■\Hsemoproteus simondi, de Mello, 1934 a, pp. 6-10, 14-15, pi. ii. 

 Heeinoproteus simondi, Coatney, 1936, p. 89. 



Trophozoite small, rather irregular or amoeboid, with a zone 

 of pigment granules across the centre, at first only sHghtly 

 displacing the nucleus of the corpuscle ; by its further growth 

 the nucleus of the corpuscle is more displaced. Sometimes 



ABC 



Pig. 115. — Hsemotr opens simondi (Castellani & Willey). A, female 

 gametocyte ; JB, male gametoeyte ; C, double infection 

 with a male and a female gametocyte. (After Dobell & 

 Miihlens.) 



the parasite is round, lenticular or oval, the oval form nearly 

 filhng the corpuscle and moulding itself on the nucleus of the 

 blood-cell. Spherical or discoidal forms are gametocytes. 

 In the male type, body faintly granular ; stains a delicate 

 pale blue with Leishman's stain, and possesses numerous small 

 pigment granules scattered round the periphery. In the female 

 type, body stains dark blue ; pigment granules, though 

 numerous, are slightly larger, and a varying number of 

 vacuoles always present. 



Dimensions. — Gametocytes about 18/x, in length by 9 /i in 

 breadth. 



Remarks. — Dobell (1910) describes schizonts in the red 

 blood-corpuscles. These are round bodies about 8^ in 

 diameter, and are supposed to divide into two or four mero- 

 zoites : but probably this apparent division was an artefact 

 due to fusion of adjacent parasites during the drying of the 



q2 



