260 



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. metcbnikowi, Gametes and Vermicule 



2. H. testudinis. In the blood of Testudo par- 

 dalis. Three forms occur (i) Unpigmented oval forms 

 3yu, in diameter; (2) Pigmented reniform parasites 10 to 

 12/xin 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 



i. 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. 



