KEI’OKT OF TKAVELLING I'ATHOLOGIST AND I’KOTOZOOLOGIST 
141 
Tkypanosomes 
Trypanosoma numidcB, n. sp. 
Host, Guinea fowl {Numida ptilorhynoha). Locality, White Nile 
Plate XVI., figs. 21-25 and 28 
In the section devoted to the consideration of the Leucocytozoon of the guinea fowl it is 
mentioned that a trypanosome was occasionally encountered. Prom the figures (Plate XVI., 
figs. 21-25, and 28) of this trypanosome it will be seen that two types are found, a large and a 
small. Some trypanosomes (fig. 28) seem to hold a position intermediate between these two 
forms. In the small forms there is a certain resemblance to the trypanosome of the Indian 
pigeon described by Hanna. The non-fiagellar end is very much drawn out, and the body is 
relatively wide. The total length of some of these small forms does not exceed 35/(. 
The larger forms resemble Trypanosoma avivm to a certain extent, Init the measurements 
vary. 
The measurements of two of these forms are as follows : 
8-4/. 
7'0/x 
Extremity to micronucleus. 
9-8// 
9'8/< 
Micronucleus to nucleus. 
4-2/< 
2'8/r 
Length of nucleus. 
18-2/( 
18-2/1 
Nucleus to extremity. 
5-6// 
70/1 
Flagellum. 
5-6// 
2-8/1 
Width of body at nucleus. 
For this trypanosome, which does not correspond to any known species, I suggest the 
name Trypanosoma numidce, from its host, Numida ptilorhyncha. 
Trypanosoma mabuice, n. sp. 
Host, Mabuia qwinqnetceniata. Plate XIL, figs. 13, 15, 16, and Plate XV., figs. 7, 9, 11 
In the lizards of Wau which harboured the two parasites described under the names of 
Hcemogregarina gracilis and Plasmodium mabuice there occurred also a trypanosome which was 
to he found in two very definite forms. One of these forms resembles Trypanosoma rotaiorium 
of frogs and the other Trypanosoma inopinatum of the same amphibian. The broad form is 
shown in Plate XIL, fig. 13, and in drawings from life in Plate XV., figs. 7, 9, 11. The figures on 
Plate XV. are from a single trypanosome in varying positions. It will be seen that the body of 
the trypanosome is a leaflike portion of protoplasm which is doubled over along its long axis. 
One side of the body is undulatory in the living condition and represents the undulating 
membrane. Along the border of this membrane runs the continuation of the flagellum as in 
other trypanosomes. In films stained by Giemsa stain the body of the trypanosome stains a 
deep blue and is filled with dark staining granules. There is a free flagellum continued along 
the membrane towards the opposite end of the body. The nucleus and micronucleus are 
difficult to distinguish. The length of the large forms is roughly 30-40;/ and the breadth 
8'5;i, but owing to the shape of the body measurements are difficult to make. 
The small forms of this trypanosome are shown in Plate XII., figs. 15 and 16. They 
measure 20 to 25// in length and about 2 to 2'5// in breadth. There is a free flagellum, and 
the non-flagellar end is pointed. The flagellum arises from a micronucleus situated near to 
the pointed extremity. The nucleus is near the mici'onucleus. The undulating membrane is 
fairly straight. 
The exact relations of the two forms of trypanosome met with in these lizards have not 
'rrypanosonie 
of ihe 
Abyssinian 
guinea fowl 
A lizard 
trypanosome 
Two forms in 
the blood 
