A NEW HAEMOGREGARINE IN AN AFRICAN TOAD 117 
(ii) Rather large spherical forms with a single nucleus, and no lines of 
division visible, and no development of a conical red area within 
the cyst wall. With regard to the cyst wall, this is of a well- 
marked double outline, and in the free torms shows perforations 
(Fig. 8) or intervals at certain points. 
(iii) Free encysted forms in which the outline of the parasite is almost lost, 
and the contents consist of a finely granular reddish mass in which 
denser masses of chromatin occur (Figs. 9 and 1 1). 
In some of these toads the leucocytes contained masses of pigment consisting 
of numerous spherical granules. 
In fresh specimens of blood no motile vermicides were encountered. In some 
respects this parasite resembles H. stepanozvi, but this has only been recorded in 
reptiles. 
Since this was written Nicolle and subsequently Billet have described a 
haemogregarine in toads (Bufo mauritanicus) from Algeria. 
Though the description of the cyst and its polar masses of stain differ in some 
respect from what I have seen in these specimens, yet there are so many similarities 
in the parasite itself that it is probable that the species are identical or closely allied. 
It will be therefore inadvisable at present to propose a name for this West Coast 
haemogregarine. 
