273 
Other species are 77 . biretorta in L. ocellata , 77 . 
'platydactyli (Billet) in Platydactylus mauritanicus , 
77 . psammodromi in Psammodromus algirus , 77 . mabuiae 
in Mabuia vittata , 77 . erlichi in Varanus exanthema- 
ticus , and 77 . macroscinci in Macroscincus coctaei 
(Cape Verd Islands). 
Haemogregarines in Chelonians 
i. 77 . stepanozvi.- —-It is found in the tortoise, 
Cistudo europaea. This may be taken as the type 
haemogregarine. It presents the following forms 
(Fig. .88 ):-. 
(i) Reniform parasites, ten to fourteen p long. 
Curved and thickened at each end, granular, non- 
pigmented. Intermediate forms occur between this 
and the next developmental stage. 
(ii) Vermicule forms, also endoglobular, but after 
examining a fresh specimen of blood for some time, 
free forms are seen thirty to forty ^ long and three to 
four ^ broad. These are actively motile, and con¬ 
strictions can be seen travelling down their length 
during the motion. 
(iii) Young forms and segmenting forms are not 
seen in the circulation. These are found in the liver. 
The segmenting forms are at first endoglobular, but 
later free. They occur as ovoid forms, ten to sixteen 
A* long by four to six p broad, shewing as many as six 
nuclei (chromatin masses). The protoplasm finally 
segments and there is formed 
(iv) An actively amoeboid young form (mero- 
zoit). 
The spores that are found in the kidneys of 
tortoises belong, according to Laveran, not to the 
haemogregarine at all, but are those of a Myxosporidium 
(M. danilewskyi). 
T 
