148 
REPORT OF TRAVEELING PATHOLOGIST AND PROTOZOOLOOIST 
Hcrmoprofc/ts 
IlfTmoprotcu!: 
in a lizard 
Appearances 
in the fresh 
Vjlood 
are formed from the male gametocyte in much the same way as in the case of the 
Plasmodium of Inrds. The microgametes (fig. 14) are llagellum-like portions of protoplasm 
which are slightly tapering, one end lieing a little thicker than the other. They are 
about 16-20^ in length. i\t the thicker end is a structure which is either a membrane or 
a flagellum. It is constantly present as a line which leaves the thickest end of the body at an 
acute angle, passes towards the thinner end of the body for a short distance Q- of length of 
body), and then joins the body again. It might be interpreted as the margin of an undulating 
membrane which has its widest part at the thicker end of the body. After leaving the end of 
the body it always curves in again to join the body, and this is more in accord with its 
interpretation as a membrane. After joining the Ijody again it cannot lie traced any further. 
Chromatin is distributed irregularly along the body of the microgametes as in other Plasmodia. 
In the case of large infections about one corpuscle in every field (oljj. oc. 4, Zeiss) is 
infected with this parasite. 
This parasite was present in about half the lizards examined. It always occurred with 
the hoemogregarine (Plate XII., figs. 20, 21), and sometimes with the trypanosome (Plate XII., 
figs. 13, 15, 16). Douhle infection of the corpuscles with haemogregarines and this parasite 
was common. For this parasite, which evidently has affinities %vith Plasmodium of birds, 
I suggest the name Pktsmodium mahuiee. 
H JE M O P R O T E U S 
HfFinoproicns agamce, n. sp. 
Host, Agama colonorum. Locality, Wau, Bahr-El-Ghazal Province 
Plate XIII., figs. 1-10, Plate XV., figs. 12, 14 
This parasite was discovered in the blood of a lizard {Agama colonorum) at Wau, in 
the Pahr-El-Ghazal Province. It was found in the blood of several lizards examined at Wau, 
and again in one lizard taken at Dem Beshir Wood Station, lower down the Jur Eiver. 
The infection was never a very large one. 
In the fresh blood could be distinguished several types of parasite. There are the 
small immature forms of various shapes, which appear as white transparent areas in the 
corpuscle, and having from one to more brown pigment grains. The grains of pigment 
increase in number with the size of the parasite. There is a general tendency towards an 
elongation of the body of the parasite, as occurs in Halteridium of birds. A slow change in the 
shape of the parasite takes place, and there is a corresponding movement in the pigment 
granules, which slowly alter their position. Definite pseudopodia do not appear to be formed. 
The smallest forms observed are oval or flame-shaped, and have no pigment granules. The 
largest types are of tw'o varieties—male and female gametocytes. The male gametocyte is an 
elongated or sausage-shaped body, occupying usually one end of the cell and extending round 
one side of the nucleus towards the other end of the corpuscle. Its protoplasm is white and 
very feebly retractile. It strikes one as being of a very liquid nature, and tliis appearance is 
intensified by the rapid streaming of the coarse pigment grains. The female gametocytes are 
early distinguished from the preceding. They are more definitely sausage-shaped, though one 
end has a tendency to be more pointed than the other. The protoplasm of the female 
gametocyte is highly refractile, and this gives it a greyish colour, which appears in sharp 
contrast to the white colour of the male forms. The pigment granules in the female 
gametocyte are more numerous and finer than those of the male. In the fresh blood no forms 
could be distinguished as definite schizonts. 
