REPORT OF TRAVELLING PATHOLOGIST AND PROTOZOOLOGIST 
157 
8. Pi/thon, sp. HiBmogregai-ines of three types. («) Common type ; looped witliin cyst 
which measures ll'2/i by 3p. (b) Large form with alveolar protoplasm; size 1‘2'fi/i iiy 4'2p. 
(c) Small stumpy forms, unloopcd, and measuring 9-5/ii by 3’5p. 
9. Sternotfuerus adansoni. In this tortoise taken in the Bahr-Bl-Ghazal, an encysted 
haeinogregarine was found in the corpuscles. The cyst measured 12'5/.i by o'Op. Within the 
cyst was a narrow hsemogregarine of approximately twice the length of the cyst, and doubled 
up so that the limbs of the loop were of equal length. 
10. Haemogregarines were also met with in the blood of the crocodile, the monitor 
{Varanus niloticits), and the toad {Bufo rcgiilaris) (Plate III., fig. 2). 
11. In the fish Ophiocephahis obscurus, taken at Barhoi Wood Station, there occurred a 
hiEinogregarine and a trypanosome. The hsemogregarine is shown in Pig. 40. The corpuscle 
is enlarged and its nucleus displaced. The hsemogregarine measures about 6/t in length. 
Haemogregarines from the eel have been described by Laveran and Fran 9 a. The eel is partly 
marine and partly fresh-water in its habits, while other fish found to harbour hsemogrega- 
rines are purely marine. As tar as 1 know% the fish Ophiocejjhalus obscurus is found only 
in fresh waters. It will be seen from the figure of this hsemogregarine that it is very similar 
to the parasite of the eel figured by Franija. For this parasite I suggest the name 
Hcemocjregarina nili. 
Leucocytozoa 
Lcucocytozoon Xoavei 
Ilamanueba Ncavei (Balfour) 
Plate XVI 
This parasite was discovered by Sheffield Neave in the blood of the guinea fowl 
(Numidia ptilorhyncha) of the Sudan and described liy him in the Second Eeport of tlie 
W'ellcome Eesearch Laboratories {page 200 et seq.). The Lcucocytozoon was not studied 
by Neave in the fresh blood, and the figures given by him in his account of the parasite 
(Plate XX., Second Eeport of the Wellcome Eesearch Laboratories) are of poorly stained 
specimens. In no case is the nucleus of the parasite clearly shown, and this has led to some 
confusion between the nucleus of the host-cell and that of the parasite. The figures showing 
various stages of division are really figures of parasites with pseudopodia or parasites 
deformed in the process of film-making. In one case, a kind of leucocyte, which is frequently 
seen in the blood films of guinea fowl Wood, has been described as a product of the division 
of the parasite. Neave is, however, correct in adhering to the view’ that the drawm-out ends 
represent the altered host-cell, and not part of the parasite. 
In the Sudan I had good opportunity of making observations on this Leucocytozoo7i, and 
I was able to examine the parasite in the fresh blood and in stained films taken from numbers 
of guinea fowl, which were easily shot; also I had, in captivity, infected guinea fowl which 
w’ere constantly examined. I had hoped to be able to discover the intermediate host of this 
parasite, iiut, though 1 had aliundance of material, all my efforts in this direction were in vain. 
However, by the study of this parasite in the fresh Wood, and in the stained films, I was able 
to convince myself on several points of interest. In the first place it w’as soon evident that 
great caution had to be exercised in judging the appearances of the parasite in the stained 
films, for it is remarkable the ease with which this parasite becomes deformed, altered in shape, 
and even separated from its host-cell in the process of making the films. It is only liy 
careful examination of the fresh Wood that one is enaliled to avoid falling into error. Attention 
Of tortoise 
Of other 
reptiles 
Hremogre- 
garine in a 
fresh-water 
fish 
f.cucoryfozoa 
IA'ucocytozoon 
of the guinea 
fowl 
