PLASMODIUM. 291 



243. Plasmodium mackiei de Mello & de Sa. (Fig. 140.) 



■\Plasmodiuni mackiei, de Mello & de Sa, 1916, pp. 736-7, pi. Ixiv, 

 fig. C, 1-10. 

 Plasmodium mackiei, Wenyon, 1926. p. 1364 ; Coatney & Rouda- 

 bush, 1936, p. 339. 



Young trophozoite of a baciUary form. The schizonts show 

 a, precocious division of the chromatin, and always form six 

 merozoites in the rosette. Gametocytes spherical or ovoid. 



B C 



Fig. 140. — Plasmodium, tnackiei de Mello & de Sa. A, young tropho- 

 zoite ; B, schizont ; G, gametocyte. (After de Mello and 

 de Sa.) 



Habitat. — Blood of Myotis muricola (Hodgs.) {=Vespertilio 

 muricola) : Poktijguese India, Arjuna (Bardez), Santa Cruz. 



244. Plasmodium narayani de Mello & Dias. (Fig. 141.) 



■\Plasmodium narayani, de Mello & Dias, 1936, pp. 212-13, pi. iii. 



Young trophozoite has an annular form, with its cytoplasm 

 more or less thin or more or less compact. Sometimes two 

 " rings " occur in the same red blood-corpuscle. Parasite 



A B C D E F 



Fig. 141. — Plasm.odium narayani de Mello & Dias. A, flimsy " ring " ; 

 B, compact " ring " ; C, two " rings " in the same corpuscle ; 

 D, full-grown trophozoite ; E, " rosette " showing schizo- 

 gony ; F, female gametocyte. (After de Mello and Dias.) 



not seen in the living condition, but inferred to be strongly 

 amoeboid, as many aberrant forms, such as fusiform, crescentic 

 or triangular, were met with. Young schizont occupies 

 one-sixth to one-fifth of the red cell, and sometimes shows one 

 or two granules of almost black pigment. Full-grown schizont 

 round, with many granules of pigment, some of them rod- 

 shaped, filling the cytoplasm. Chromatin lodged in a clear, 

 vacuolated zone, in contrast with the cytoplasm, which is 



TJ2 



