SPECIAL MORPHOLOGY AND TAXONOMY OF SPOROZOA 417 



/ 



Fig. 177. — Hcemogregarina perniciosa, a, haemogregarine parasite of the rat a to d, 

 development of the agamont in the liver cells of the rat; e, free parasites in the blood; 

 /, encysted parasites in the leukocytes; g, to k, stages of fusion of the gametes in the 

 mite; I. to n, development of the zygote; o, sporocyst with sporoblast buds covering 

 the surface; p, section of the same; q, older sporoblast with sporozoites. (From 

 Calkins after Miller.) 



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