KEPORT OP TRAVELLING PATHOLOGIST AND PROTOZOOLOGIST 
165 
in some instances there is a certain resemlilance between the parasite plus its host-cell and the No connection 
trypanosomes, there is nothing to uphold the view that the two are in any way connected, 
Many facts have been brought forward in this paper showing conclusively that Schaudinn was trypanosomes 
mistaken in his idea of the relations existing between the host-cell and the parasite, and if he 
could be mistaken in a point so fundamental one hesitates to accept the remainder of his 
description. It has recently been shown that Halteridium may reproduce in a manner quite 
otherwise to that described by Schaudinn. His work has as yet received no conclusive 
support from any quarter, but many observers have brought forward evidence opposing his 
views. Apart from the correctness or otherwise of these ideas, it seems to me premature to 
accept Schaudinn’s statements as finally proved, and to take as types of the development of 
trypanosomes the two parasites which Schaudinn investigated and about which there has been 
so much dispute. It would be safer to wait till more confirmatory evidence has accumulated 
before making fundamental alterations in our conceptions of the relationship existing between Schaudinn's 
trypanosomes and the intra-corpuscular blood parasites. It may be that many of these parasites 
have a flagellate ancestry, but it must be remembered that even if this be the case the two 
groups may now be sufficiently far apart to constitute distinct classes. Before grouping them 
together in a classification it must be shown that the two forms occur in the life-history of a 
single parasite, as Schaudinn has attempted to do for the parasites in the little owl. His 
observations are in great.part erroneous, and unless his views are accepted as correct, in spite 
of evidence to the contrary, there is no known intra-corpuscular blood parasite which has a 
definite flagellate stage in its life-history. The parasite of kala-azar, the Leishinan-Donovan 
body, is really the resting stage of a flagellate, and is not to be confused with other intra-corpus¬ 
cular l)lood parasites. The parasites of the malarial fevers of man and birds. Halteridiuni, and 
the parasite described in this report as occurring in the blood of the lizard Agama colonorum, 
and many other parasites closely related to these, show features common to themselves and also 
with the Coccidia, and there is much to be said in favour of the grouping together of these 
forms with the Coccidia. Other blood parasites, such as those belonging to the genus Babesia, 
are separated more widely from the Coccidia, and in the absence of pigment approach more to 
the Heemogregarines, which in many respects show affinities with the Schizogregarinae. 
Leucocytozoon in Francolin Partridge 
In a Francolin partridge shot at Bor on the Jebel Eiver I found a parasite resembling Leucocytozoon 
closely the Leucocytozoon of the guinea fowl. In the blood male and female gametocytes were 
present, and from the material at my disposal (one dead bird) it could not be distinguished 
from the parasite of the guinea fowl. 
HeLMINTHES Helminthes 
A collection of parasitic worms was made. These consisted of Cestodes, Nematodes, Parasitic 
and Trematodes from various animals. Filaria embryos were found in the blood of the 
toad {Bufo regularis), the lizard {Agama colonorum), the Francolin partridge, the guinea fowl 
{see paper by Sheffield Neave in the Second Eeport of the Wellcome Eesearch Laboratories). 
In a donkey, which I had taken up from Khartoum, I found a single filaria embryo after Fiiariasis 
returning from the Bahr-Bl-Ghazal Province. The embryo had no sheath, a sharp tail, and 
was very active. At its anterior end there was a rod-like structure, which was extruded 
and retracted alternately. The length of this embryo was 224/i. Further examination of 
the blood at repeated intervals failed to reveal any more embryos. 
Though the lilood of hundreds of natives was examined, only on one occasion were 
