339 
irregular extent. The periplast could be seen at these lightly stained 
areas and it was continued to form the slender extremity from which 
the core was also absent. Occasionally granular forms were seen in 
which the protoplasm of the core apparently arranged itself into small 
granular masses, but no regularity could be detected in the arrange¬ 
ment of these granules. Undoubted multiplication forms were not 
seen. , f 
For descriptive purposes we propose for this organism the name o 
Sprochceta jonesii. 
ARTHROPODA 
The protozoa found in this class were encountered by 
chance during an investigation of the development of various 
haematozoa, while examining various blood-suckers, either as controls, 
or for the presence of developmental forms of the blood parasites. 
Many tsetse flies and mosquitoes, a few Stomoxys, ticks o vanous 
sorts, fleas and lice, and “ Congo floor maggots," were examined. 
The only protozoan parasites observed are recorded below. 
MOSQUITOES 
(1) Myzorhynchus paludis. 
A cluster of radiating club-shaped bodies (Colome radiee) was 
seen in the thoracic tissues of a female of the above species, examined 
for malaria at Lusambo. The parasites became free, deveioped a 
flagellum and were actively motile in the salt solution in which 
mosquito was dissected. 
(2) Pyretophorus costal is. . , 
Some excitement was at first created during the examination o 
the alimentary canal of mosquitoes, fed at varying antecedent periods 
on animals infected with trypanosomes, by the presence o^vcnmcu 
like bodies (Plate XXXII, fig. 14). measuring about iS by /*■ 
These parasites progressed slowly by active lashing and slower 
amoeboid movement ; some similar foims weie motion ess , 
The amoeboid movements were of two sorts. The fast mvcflved 
a change in the whole shape of the parasite. T e secon 
a simple protrusion of protoplasm from the rounded anterior, 
from the effilated posterior extremity. 
