255 



(= Olfersia) maura. These flies infest pigeon houses. 

 The incubation period in the pigeon may be as long as 

 thirty-eight days. The cycle in the fly has not yet been 

 traced. It remains to be seen also whether Hippo- 

 boscids transmit halteridia of other birds. 



Post-mortem. Pigment is found in the kidney, 

 intestine, bone marrow, liver, and especially the 

 spleen. The brain, on the contrary, is almost entirely 

 free from it. 



OT. 



Fig. 76. (i) H. smithi ; (2) H. neavei ; (3) H. testudinis 



It is probable that the halteridia of all birds are 

 not of the same species. Inoculation from one bird 

 to another is extremely difficult, if not impossible. 

 This may be due to the fact that the parasites in the 

 blood are all sexual forms. 



7. H. smithi. In smears from the liver of the 

 turkey (Meleagris gallopavo domestic a). The parasite 



