256 
is oval 14 by 8or elongated 25 by 5^. 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 20^ 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 nocturi) 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. j 6 A). 
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 and nuclear structures. The female 
type is characterised by deeply staining endoplasm 
with many chromatin granules and vacuoles, and by 
