PLASMODIUM CAN IS 



515 



Plasmodium kochi Laveran, 1899. 

 This Plasmodium is found in chimpanzees [Anthropopithecus troglodytes 

 Gm.), and in monkeys in Africa and in Ceylon; in the latter it causes illness 

 and death. The spleen and bone-marrow are found pigmented. It is said 

 not to be inoculable. 



Plasmodium pitheci Halberstaedter and Prowazek, 1907. 

 Found in the ourang-outang [Simia satyrus) and the chimpanzee, in which 

 the trophozoites resemble P. vivax and the gametes P. malarice. Schtiffner's 

 dots can be seen. 



Plasmodium inui Halberstaedter and Prowazek, 1907. 



In Macacus cynomolgus L. and M. nemestrinus L. It is like P. pitheci, 

 but the hgemozoin is in the form of fine yellow granules. Merozoites, twelve 

 to sixteen in number. Schiiffner's dots absent. 



Plasmodium cynomolgi Mayer, 1907. 



In M. cynomolgus L. Merozoites, eight to thirteen. Schufiner's dots 

 present. 



Plasmodium bovis Kolle, 1898. 



In cattle in South Africa, in which they produce remittent fever and severe 

 anaemia. 



Plasmodium eanis Castellani and Chalmers, 1910. 



This parasite, which is very common in pariah dogs in Ceylon, was discovered 

 by us in 1908. It resembles P. vivax, entering the red cell as a small round 

 merozoite, and growing into a pigmented Plasmodium, and finally dividing into 



Fig. 171. — Plasmodium canis Castellani and Chalmers. 



1-2, Merozoite entering the corpuscle; 3, young trophozoite (the red cell 

 shows Shiiffner's dots) ; 4-6, trophozoites, enclosing cells showing Shiiffner's 

 dots; 7-10, schizonts showing various stages of nuclear division prior to the 

 formation of the merozoites. 



a number of merozoites. Schiiffner's dots are also present. Fig. 171 shows 

 the schizogony of this parasite, and Fig. 172 the gametocytes. The macro - 

 gametocyte has a small rounded nucleus and the microgametocyte an elongated 

 narrowish nucleus extending across the parasite. 



