305 
CROCODILES 
Trypanosomes. 
In stained smears of blood taken from a crocodile (Crocodilus 
cat aphractus ?) shot in the Congo, a trypanosome with a length of 
about 35 ft (not including flagellum) was seen. The body was about 
2 n wide, the blepharoplast was 3/2 from the posterior extremity and 
the nudeus was near the centre of the body and occupied its entire 
width. The undulating membrane was well developed. 
Drepanidia. 
Drepanidia of an ordinary type were seen in the same crocodile 
(Plate XXV, fig. 49). They usually measured 12*5/2 in length and 
45 p in breadth. The nuclei of the host cells were displaced but not 
injured. No destruction of the cytoplasm of the blood corpuscles 
was observed, and no division forms were seen. Folded, two- 
shanked,” intracorpuscular parasites did not occur. 
LITERATURE 
Mixchin, Gray and Tulloch. Proc. Roy. Soc., Series 13 ., Vol. 78, p. 251. Report 
the presence of a large trypanosome in a crocodile in l ganda. 1 he\ give 
no further particulars. 
TORTOISES 
Trypanosomes. 
In stained smears of blood taken from a tortoise caught in the 
Gambia, trypanosomes of one type were seen (Plate XXV, fig. 45 )- 
The measurements are as follows : — 
Measurement I 
II 
„ HI 
IV 
V 
VI 
Total length of parasite 
Width of membrane ... 
1*2 to 3'5 /a 
T 5 to i8 '5/* 
2-2 to 3’5/A 
12-5 to 23*0/2 
io’o to 15*0/2 
2-0 to 3*5/2 
35*0 to 58*0/2 
2 * 0/2 
The body tapers gradually towards both extremities, which are 
sharp-pointed, the anterior extremity being more slender than the 
