Entozoa from Birds in Uganda. 461 
The tail is bluntly rounded at the tip. Almost the whole of 
the body-cavity is filled by the uterus, which contains 
enormous numbers of eggs. The latter measure 57 x 37 p- 
62x40 w. They have a rather thick shell and contain a 
coiled embryo. 
CESTODA. 
4, Biuterina uganda, sp. n. 
Host: Cinnyris gutturalis. (Sunbird.) 
This is a small species, attaining a length of about 2 cm. 
upwards. The maximum width of the strobila is about 
O'7mm. The scolex measures 0°4 mm. across, and the suckers 
have a‘diameter of 0°2 mm., with a large forwardly-directed 
aperture. The rostellum has a muscular cushion at its apex, 
Biuterina ugande@ ; a gravid segment (from a whole preparation). 
C.S., cirrus-sac ; D., dorsal excretory vessel ; F., cuticular frill ; 
P., paruterine organ; Ut., uterus; V., ventral excretory vessel. 
looking almost like a fifth sucker. This measures 0°12 mm. 
in diameter and bears two rows of about twenty-two hooks 
each. The hooks of the anterior row are about 20 w in 
length, those of the posterior row a little shorter. All the 
hooks are of the triangular shape characteristic of the genus. 
Segmentation begins almost immediately behind the scolex. 
Each segment has a slightly raised fold or frill of cuticle 
running round it transversely near its anterior end (see 
hig. 3.°F.), 
