THE PATHOGENIC HEMOSPORIDIA 



271 



Hepatozoon piemicioHum, Miller, a hemosporidian parasite of flie rat. (After Miller.) 

 fi ti> d, development of the schizont in the liver rells of the nit; <", free parasites in tlie blood; 

 /, encysteii parasites in lymphocytes; u to k, stages in conjiiKation of isoganietes; /, m. n, 

 (Crowth of the ookinet into sporont; o, sporocyst derived from the oijkinet, with sjxiroblast 

 buds roverinj? the surface; p, section of same; q, older sporoblast with sporozoites; r, a 

 single sporozoite. Stages ff to r are fonned in the tissues of the intermediate host, a mite, 

 Lelaps echidninus. 



