271 



and anaemic, and, as the name of the species implies, 

 a disintegrating action on the nucleus is one of its 

 effects. The nucleus is either pressed to the side or 

 broken up into fragments. 



The parasite in its endoglobular stage becomes 

 surrounded with a cytocyst. Some of these cysts divide 

 up into about a dozen macromerozoits (Fig. 88), while 

 others divide up into twice as many or more micro- 

 merozoits. Corresponding to these we have free forms 

 in the liver, twelve by three ^ and eight by two ^ 

 respectively. It is said to be transmitted by ticks in 

 the larval and nymphal stage. 



Fig. 85. (i) H. mesnili, shewing characteristic looped Fermicule ; 

 (2) //. laverani, shewing characteristic hooked Fermicule and 

 two bright Granules (after Simond) ; (3) H. bigemina 

 in Blood of Blenmes (after Minchin) 



2. H. lacazei ( Haemocytozoon claratum). In 

 the blood of lizards. The vermicules have a peculiar 

 shape (Fig. 88). Here also cyst formation has been 

 described in the spleen by Labbe. 



3. H. ser gentium. In a lizard, Gongylus ocellatus. 

 Has a destructive action on the nuclei of the red cells. 

 They flatten and elongate, and also fragment. Para- 

 site is reniform, 15-18^ by 5-6^. The protoplasm has 

 numerous granules. 



4. H. curvirostris. In Lacerta ocellata var. 'pater. 

 Differs from the previous one. (i) The vermicule form 



