200 



ESSENTIALS OF BACTERIOLOGY 



the so-called gametes or sexual types. In the tertian and 

 quartan varieties these are not very different from the mature 



THE 



MOSQUITO PHASE: 



Fig. 100. Schema showing the human and mosquito cycles of the 

 malarial parasite: A, Normal red cell; B, C, D, E, red cells containing 

 amebulas or myxopods; F, G, H, sporocytes; ]', K', L', M', microgame- 

 tocytes or male gametes; J", K", L", M", O, macrogametocytes, or 

 female gametes; N', M', microgametes; P, traveling vermicule; Q, 

 young zygote; R, S, zygotomeres; T, blastophore; U, mature zygote 

 (modified from Blanchard's diagram illustrating life-cycle of Coccidium 

 schubergi) (Rees, in "Practitioner," March, 1901). 



organisms, but the estivo-autumnal gametes are crescentic in 

 shape and very characteristic. 



