28 
obtained has not brought to Hght as many blood parasites 
as other investigations would lead us to believe were present. 
Eleven parrots have come to autopsy bearing proven- 
tricular spiroptera. This is an increase of two over 1910. 
The birds of this list were caged on the north and west sides 
of the parrot room in the Bird House, excepting the two 
Pennants Parakeets, which were on the south wall. No par- 
ticular cages or groups of cages seem to be affected with 
extraordinary severity. 
The following are lists of determined parasites, blood 
parasites, and parrots affected with proventricular worms : 
General Parasites; 
1853. Chapman's Zebra: 
Ascaris Equorum in Stomach and Intestines. 
1873. Lesser White Nosed Monkey: 
Filaria Gracilis in retroperitoneum. 
1876. Green Monkey: 
Filaria Gracilis in retroperitoneum. 
1895. Weeper Cebus : 
Filaria Gracilis in retroperitoneum. 
2051. Talopian Monkey: 
Filaria Gracilis in retroperitoneum. 
2088. Zebra: 
Ascaris Equorum in intestines. 
2175. Common Deer: 
Tenia Echniococcus in lung. 
Blood Parasites; 
1905. European Magpie : 
Filaria Larvce. 
2017. White Throated Jay Thrush: 
Filaria Larvoe. 
2018. White Throated Jay Thrush: 
Filaria Larvoe. 
2036. Common Crow: 
Halteridium. 
