THE ANIMAL PARASITES OF MAN 



male gametocytes is pale-staining and the nucleus is elongate, while 

 the cytoplasm of the females is darker and the nucleus is smaller 

 and round. Formation of male gametes from male gametocytes 

 (the so-called process of " exflagellation ") may occur on a slide 

 of drawn infected blood, also fertilization, and formation of the 

 ookinete, as first seen by MacCallum. The correct generic name for 

 Halteridia is, apparently, Hcemoproteus. Wasielewski (1913), working 



FIG. 76 Hamoproteus (Halteriditini] columbce. Life-cycle diagram : I, 2, stages in red 

 blood corpuscle of bird; 3,4, gametocytes (30, 3 , 3^ ?); 5", formation of microgametes ; 

 6, fertilization (in fly's gut); 7, ookinete; 8-12, stages in niononuclear leucocytes in lungs. 

 (After Aragao.) 



on H. danilewskyi (var. falconis), in kestrels, finds that the halter- 

 idium may be pathogenic to nestlings. The cycle of H. noctuce 

 described by Schaudinn (1904) lacks confirmation. The account of 

 the life-cycle of H. columbce given by Aragao (1908) is illustrated in 

 fig. 76. It agrees with the work of Sergent (1906-7) and Gonder 

 (1915). Mrs. Adie (1915) states that the cycle in Lynchia is like that 

 of a Plasmodium. 



(3) The Leiicocytozoon type. The trophozoites and gametocytes 

 occur within mononuclear leucocytes and young red cells (erythro- 



