259 



not uncommonly infected with trypanosomes and 

 also spirochaetes. 



Fig. 760. Development in the blood of H. ziemanni and change 

 to resting forms (after Schaudinn) 



ii. H. lovati'm the red grouse (Lagopus scotti- 



cus). 



HAEMAMOEBAE IN TORTOISES 



I. H. metchnikowi. Found in the blood of 

 Trionyx indica, or Cbitra indica, a large fresh-water 

 tortoise, in many Indian rivers. All adult specimens 

 of this tortoise from the Jumna were infected. 



The parasite resembles H. danilewskyi (hal- 

 teridium), in that two forms are easily distinguished 

 in the blood (i) a hyaline form with large pigment 

 grains, staining very slightly with methylene blue ; 

 (2) a granular form, with fine pigment, staining deeply 

 with methylene blue. These forms correspond to the 

 male and female gametes respectively. In one of 

 Simond's figures it is interesting to observe a male and 

 female gamete in the same red cell, which, so far as we 

 know, has never, been observed in the case of H. danil- 

 ewskyi. But besides these pigmented forms there are 



