37 
thus affected and the source of the parasites traced to 
their feathers by also finding them, aUve, in their ^'flutter- 
ings" and not in freshly voided droppings after castor 
oil. In determining the source, the sunflower seeds we 
use were found free of any kind of metazoan parasites or 
their ova. The parasites belong to the Plumicoles 
(genus Megninia), and are nonpathogenic, feeding upon 
the detritus of the feathers. I have gone partly through 
the literature and these are probably new species. 
CocciDiosis IN Himalayan Thars. 
Following the death of a young thar with a hemorrhagic 
and ulcerative enteritis in which this protozoan was found, 
the feces of its cage mates were examined, resulting in the 
isolation of a young thar which was only slightly infested 
and apparently in good health. The organism is another 
new species (which we cannot study on account of time 
limitations) whose congener, Eimeria faurei, produces fatal 
bloody diarrhea in young Swiss cattle. These parasites 
multiply in situ, for which reason a light infestation has a 
significance quite different from the hookworm infesta- 
tions in the lynx and hyena. Furthermore the oocysts 
are persisting (after castor oil) unlike those of the swift 
fox (1916 Report, page 39), and with sufficient multipli- 
cation will produce recognizable disease. Its feces also 
show whip-worm and strongylus ova. We are keeping 
the animal in isolation for observation and hookworm 
research. 
Trtchosoma Hepaticum in Prairie Dog. 
Last year we reported the discovery of ova, in the liver 
of, a prairie dog, which are commonly found in wild rats, 
and that we proposed to feed ova from rats to prairie 
dogs with the hope of producing a fatal disease that might 
be considered as an exterminant. The research is con- 
tinuing; slowly because it takes such a long time (3 
months or more) for the eggs to incubate. We have, so 
