KEPOKT OF TKAVEIjLING PATHOLOGIST AND PKOTOZOOLOGIST 
143 
beyond the commencement of the undulating membrane, which is well defined. There is 
a free flagellum. As far as could be judged by measurements on the living trypanosome the 
total length of the body was about 50 /j. In the blood of tbe same snake there occurred with 
the trypanosome a haimogregarine and a hiemocystidium, which have been described at another 
part of the report. For this trypanosome I propose the name Trypaiiosovia najee, from its host, 
Naja niijricollis. 
Trypanoaovia avicularis, n. sp. 
Host, Avic'itlaris zebra. Locality, Bor, Eivor Jebel 
Plate X., fig. 9 
This trypanosome occurred in large numbers in the same zehra mouse in which the 
parasite described under the name of Babesia avicularis was discovered. In many respects 
this trypanosome resembles Trypanosoma duttoni, but there are differences in the measurements 
of the two. The measurements of one of these trypanosomes are as follows : Non-flagellar end 
to micronucleus 4'2p, micronucleus to nucleus 7'0/ii, length of nucleus nucleus to 
flagellar end 7'0/i, flagellum 4‘2p ; wddth at nucleus 1'5 /j. Such a trypanosome is shown 
in Plate X., fig. 9. The non-flagellar end is fairly long, the micronucleus is large, and 
undulating membrane straight. These trypanosomes were only seen in the stained films, 
and no inoculation experiments were made. 
Trypanosoma acomys, n. sp. 
Host, Acomys, sp. (Spiny Mouse). Locality, Taufikia, White Nile 
Plate X., figs. 17-19 
This trypanosome is found in several forms. One form, which is the common type, 
resembles the trypanosome just described as T. avicularis in size, but differs in the arrange¬ 
ment of the nucleus and micronucleus (fig. 17). The flagellum is longer. In addition to 
this type, which measures about 25 /j in total length, there are some much larger forms 
measuring up to 50/i in length (fig. 19). These have the non-flagellar end much elongated 
beyond the mieronucleus, while the nucleus is nearer the flagellar than the non-flagellar end of 
the body. Such trypanosomes are probably multiplication forms. Irregular forms are also 
met with (fig. 18). In the irregularity of structure this trypanosome reminds one of T. lewisi, 
but it evidently differs from this. It resembles T. duttoni, but differs from it in the presence 
of the very large forms and in other features. 
Trypanosoma meyaderma, n. sp. 
Host, Meyaderma frons. Locality, Bor, .lebel Hiver 
Plate X., fig. 16 
A trypanosome which appears to differ from any hitherto described species was encountered 
in a bat at Bor. This trypanosome is peculiar on account of its large size, 40 /j, and its 
much elongated non-flagellar end, which is drawn out to a fine whip-like process. The 
movements in the fresh blood are not as active as those of T. lewisi, though suflicient to enable 
the parasite to move across the field of the microscope. The measurements of a typical 
example are as follows: non-flagellar end to micronucleus ll'2/i, micronucleus to nucleus 
7‘0/x, length of nucleus 2-8p, nucleus to flagellar end 1P2^(, flagellum 8’4/(; width at 
nucleus 3-3'5p.. This trypanosome was found in half the bats examined. The infection was 
never very large. 
Trypanosome 
of tbe 
striped mouse 
Trypanosome 
of the 
spiny mouse 
Trypanosome 
in a bat 
