288 
BIRDS 
Very many birds of widely different species were examined Only 
those in whose blood parasitic protozoa were found are mentioned 
here; several trypanosomes found in Gambian birds are described in 
a previous publication, Memoir XI of this School. 
Proteosoma was never seen. Halter idium was very common 
among the small birds and pigeons examined in the Gambia. In 
the Congo Halteridium was seen only once or twice in small birds 
and in none of those in which the parasites described below were 
found. 
ASTURINULA MONOGRAMMICA. (A grey hawk common in the Congo 
Free State.) 
One of these birds was shot about midday at Lokandu and its 
blood was at once examined. In fresh specimens actively moving 
trypanosomes were seen ; dried films were therefore made at once. 
On studying them parasites of the same type as the LeucocytozoU 
of Danielewsky 1 (Plates XX-XXIII, figs. 48, 72) were seen to be 
present in large numbers. 
A second hawk of this species was shot at Lusambo. Its blood 
contained a trypanosome of apparently the same species as that 
observed in the first hawk ; the Lcucocytozodn was not seen (one 
small slide examined). 
Lcucocytozodn zicmanni. 
Under the name of Lcucocytozodn zicmanni , Liihe 2 gives a good 
review of our knowledge concerning this parasite; to his list of 
leferences two additional papers 3, 8 should be added, in which the 
occurrence of similar parasites is reported in America and in Egypt 
Although the name Lcucocytozodn has the priority, its use seems 
unfortunate, since the parasite to which it here refers is probably 
parasitic in other cells besides white cells 4,6 and it has no resemblance 
to the recently-described, undoubted leucocytozoa of mammals. 
Mule (figs. 48-61) and female (figs. 62-67) gametocytes of the 
types fully and finally described by Schaudinn 4 and previously reported 
by Sacharoff, Ziemann, 6 Laveran 6 and Berestneff 7 were frequent. In 
addition, many other undescribed forms of the parasite were seen, 
rom the nature and scantiness (four slides) of our material, it is 
