108 
Psyche 
[September 
of various sizes were carried by the hunters and each animal 
or bird shot was immediately placed in one of the bags 
which was then closed and tied with twine. 
At the camp each bag was carefully opened on a large 
piece of Canton flannel spread out on an improvised table. 
The bag was slowly turned back until the animal was left 
lying in the center of the flannel. Any ectoparasites pres- 
ent were usually collected first from the animal and then 
from the bag, if any adhered to the inner side of it. A 
comb was sometimes used in examining animals with long 
hair. With birds it was found advisable to pluck out most 
of the feathers. Some of the birds were infested with par- 
asitic flies that were quite active and difficult to capture. 
When such birds were brought in, they were placed, while 
still in the bags, in a wooden box and sprinkled with chloro- 
form. The vapor of this penetrated the bags and stupefied 
or killed all the flies that were on the birds, which were then 
easily collected. The nap of the Canton flannel on which 
the examinations were made impeded any of the fleas, lice, 
etc., that attempted to hop or walk on it and facilitated 
their capture. 
Engorged ticks in larval or nymphal forms were placed 
in pill boxes or glass tubes in order that they might develop 
to later stages. Dipterous larvae producing Myiasis were re- 
moved from animals and, if nearly mature, placed in wide 
mouth bottles containing about an inch of damp earth to 
allow them to pupate and emerge as adults. 
Since the study of monkeys was the principal purpose of 
our expedition to Chiriqui, a few words about the examina- 
tion of these animals are appropriate. A total of 107 mon- 
keys killed or captured at Camp Pital were examined for 
ectoparasites. This included 53 Orsted’s titi monkeys, 
Saimiri orstedii orstedii; 29 Panama white-throated mon- 
keys, Cehus capucinus imitator, and 25 Geoffrey's spider 
monkeys, Ateles geoffroyi. Although the examination of 
these monkeys occupied a considerable part of my time 
while at the camp, they were not productive of ectopara- 
sites. 
One female tick was found walking about on a freshly 
