PEOTEOSOMA. 



253 



217. Proteosoma moruony (de Mello & de Sa). (Fig. 131.) 



■\Hazmoprot6us moruony, de Mello & de Sa, 1916, pp. 734-5, pi. Ixiv, 

 figs. A, 1-13, B, 1-18; de Mello, de Sa, de Sousa, Dias, & 

 Noronha, 1917, p. 9. 



Hasmoproteus moruoni, Wenyon, 1926, p. 1370. 



Hce')noproteus moruony, de Mello, 1937 a, p. 99. 



Schizogony said to take place in the plasma. Merozoite 

 enters a red blood- corpuscle and assumes a circular form, 

 with a small chromatinic mass in the centre. Pigment granules 

 are present. Large schizonts not seen in the body of ery- 

 throcytes, and the largest form in a red cell does not reach 

 a quarter of the size of the infected cell. The schizont becomes 

 free in the plasma, as the "Acton body." It has no visible 

 pigment, and is surrounded by a very dehcate hyahne capsule. 

 The chromatin undergoes binary division, forming eight 

 chromatin dots. Later, all the chromatin changes into idio- 

 chromidia and the capsule eventually disappears, the mero- 

 zoites constituting the roseta. 



Gamete formation, their structure, and differentiation into 

 male and female similar to that in Hsemoproteus columbse. 



Fig. 131. — Proteosom,a m.oruony (de Mello & de Sa). A, young tropho- 

 zoite; jB, full-grown trophozoite ; C, "Acton body," show- 

 ing nuclear division ; D, schizont ; E, rosetta containing 

 merozoites. (After de Mello and de Sa.) 



The nucleus in an adult gamete is situated in the convexity 

 of the halter and nearer to one pole than the other. The 

 chromatin of the macrogamete is described as undergoing 

 division for regressive schizogony. 



Remarks. — De Mello and de Sa, though describing this 

 parasite as a Hsemoproteus species, remark that all the stages 

 of its development are seen in the peripheral blood, and no 

 special forms are to be found in the internal organs. 



Habitat. — Blood of the magpie robin, Gopsychus saularis 

 (Linn.) : from India, in the Zoological Gardens, London ; 

 also from the same host : Portuguese India, Calangate 

 (Bardez). 



218. Proteosoma prsecox (Grassi & Feletti). (Fig. 132.) 



Hsemam,aiba prmcox, Grassi & Feletti, 1890, p. 463. 

 H3em,am,ceba relicta, Grassi & Feletti, 1890, p. 465. 

 H3em,oproteus danilewskii (part), Kruse, 1890, p. 371. 

 Hsemoproteus, vars. b & c, Celli & San Felice, 1891, pp. 541-8, 

 pis. vii, viii. 



