26 o 
also found unpigmented forms, which have the typical 
gregarine look, that is to say, curved, worm-like bodies. 
The exact relationship of the haemogregarine to the 
haemaebae forms is not understood. Simond, how¬ 
ever, points out that halteridium has a vermicule 
stage, and there is the possibility of the relationship 
being similar in this case (Fig. 77). 
Fig. 77. H. metchnikowi , Gametes and Vermicule 
2. H. testudinis .—In the blood of Testudo par- 
dalis. Three forms occur (1) Unpigmented oval forms 
3/x in diameter; (2) Pigmented reniform parasites 10 to 
12/4 in diameter. Two may occur in the same cell; 
(3) Pigmented horseshoe-shaped forms 20 by 8/^. 
Male and female forms occur (Fig. 76). In this 
respect and in the possession of pigment it resembles 
H. metchkikowi and it probably should be classed as a 
haemamoeba. 
Haemamoebae in Lizards 
1. H. (‘ Haemocystidium') simondi. —In the blood 
of a tree-living gecko ( Hemidactylus leschenaultii) in 
Ceylon. Has a general resemblance to H. metchnikowi 
but is larger, displaces the nucleus, and has more 
pigment. Male and female forms occur shewing 
characteristic differences in staining. There is no 
vermicule form. 
