2 5 6 



is oval 14 by 8yu, or elongated 25 by 5/z. It is pig- 

 mented. The cells in which these parasites lie are 

 oval or spindle-shaped, with the nucleus divided into 

 two parts one on each side of the parasite. They are 

 probably leucocytes, and the parasites leucocytozoa. 



It is somewhat doubtful if these parasites are the 

 cause of the disease of turkeys (Fig. 76). 



8. H. neavei (Balfour, 1896). In the blood of 

 the Abyssinian helmetted guinea-fowl (Numida ptilor- 

 hyncha). Peculiar spindle-shaped parasites resembling 

 somewhat H. ziemanni. They are 15 to 2O//, by 5^ 

 broad, and occur in red cells (?) which are themselves 

 compressed into still more elongated spindles. They 

 shew male and female differences in staining (Fig. 76). 



9. H. (= Haemoproteus) noctuae. In the blood 

 of the little owl (Athene noctua) occur halteridium-like 

 parasites. Male and female forms with the general 

 characters of other gametes are present. Indifferent 

 forms are also described. Schaudinn believed that 

 these halteridia were stages in the life history of a 

 trypanosome also found in the blood and that further 

 development occurred in Culex pipiens by which also 

 the infection was transmitted, but this cycle has not 

 been confirmed (Fig. j6k). 



10. H. ziemanni. In the little owl Athene 

 noctua and in the grey Congolese hawk (Asturinala 

 monogrammica). The nature of the cell in which 

 these parasites occur is, according to some, a red cell, 

 according to others a leucocyte. Full grown forms 

 are long spindle-shaped parasites which have displaced 

 to one side the nucleus of the host cell. They consist 

 of periplast or sheath shewing striations, ectoplasm 

 and endoplasm arid nuclear structures. The female 

 type is characterised by deeply staining endoplasm 

 with many chromatin granules and vacuoles, and by 



