SPECIAL PROTOZOOLOGICAL STUDIES OF THE BLOOD 495 
death. In consequence of the round form of the parasite the host-cell is also 
distorted in form, losing its oblong shape, tending to become round. Pigment 
is dark yellow in color and in large granules. We have found no record in the 
literature of a haemoproteus in this bird. 
Haemoproteus of Pyromelana hordacea 
Various stages of developing gametocytes were present. Mature organisms 
have typical halteridium-like shape, and occupy almost the entire host-cell, but 
not to such an extent as in the preceding. The earliest forms seen were small and 
round without any pigment. Later the parasite became elongated and thin. 
The pigment was dark brown in color and in large granules. 
Haemoproteus of the Kingfisher Halcyon senegalensis 
The blood of this kingfisher showed a fairly heavy infection of haemoproteus. 
All stages of the developing gametocytes were present. The mature gametocytes 
were U-shaped and occupied the greater part of the cell, the nucleus being dis- 
placed. The pigment was in fine granules and light yellow in color. 
The liver, lung, and other organs were preserved in Zenker’s solution. Sec- 
tions showed no developmental stages of the parasite. 
Haemoproteus of Melittophagus gularis 
The blood of two bee-eaters belonging to the above species showed an infec- 
fection with a haemoproteus. Very few parasites were present and all those 
studied appeared to be mature gametocytes. The organisms were rather small, 
halteridium-shaped and occupied approximately one-half of the red blood cell. 
The nucleus was not displaced. The blood of both birds also showed numerous 
microfilariae. 
Haemogregarine of the Crocodile Osteolaemus tetraspis 
One specimen of the short-headed crocodile was available for study. This 
animal was autopsied shortly after death. A preliminary study of a fresh blood 
preparation revealed a fairly intensive infection with a haemogregarine. In 
fresh as well as in stained smears, both intracorpuscular forms as well as a few 
extracorpuscular forms were present. The free forms were about twice the length 
of a red blood corpuscle, and thin with a blunt anterior end. The intracorpus- 
cular parasites varied in size, some being small and sausage-shaped, while most 
were large and U-shaped, occupying most of the red blood corpuscle. ‘The nucleus 
of the host-cell was very often displaced toward one end. Smears as well as 
sections of the internal organs failed to reveal any developmental forms. 
Haemogregarine of the Crocodile Crocodylus cataphractus 
This crocodile was shot in the Du River and blood smears were made several 
hours after death. Both intracorpuscular as well as free forms were present in 
the blood. Compared with the haemogregarine of Osteolaemus tetraspis, this 
parasite was small, being approximately one-half the size of the other. The free 
