166 
Psyche 
[September 
ENTOMOLOGICAL INVESTIGATIONS IN THE 
CHIRIQUI REGION OF PANAMA 
By Lawrence H. Dunn 
Medical Entomologist and Assistant Director, 
Gorgas Memorial Laboratory 
Panama, R. de P. 
The notes presented in this paper are based largely upon 
observations made and specimens collected during a visit to 
the Province of Chiriqui, in the south-western corner of the 
Republic of Panama, in July, 1929. This expedition was 
organized by Dr. H. C. Clark, Director of the Gorgas Mem- 
orial Laboratory and included also Dr. G. B. Wislocki and 
Dr. A. H. Schultz, from the Johns Hopkins University, and 
the writer. The purposes of this visit included medical, 
embryological, anthropological and entomological studies 
on the wild monkeys of that region. This report deals with 
the entomological results. The writer took advantage of the 
opportunity offered to secure and examine a number of birds 
and other animals in addition to the monkeys in order to 
gain some general knowledge of the ectoparasites of the 
wild animal life of the areas visited. Specimens of the pre- 
valent blood-sucking diptera were collected whenever pos- 
sible and a few observations on the mosquito breeding oc- 
curring in the vicinity of our camp were also carried out. 
These investigations were conducted at Camp Pital and 
Puerto Armuelles and covered the period from July 11 to 
July 29, 1929, sixteen days at the camp and three days at 
the port. 
Dr. Clark made two later visits to Chiriqui, in February, 
1930 and August, 1931. On his 1930 trip he spent several 
days (in camp) at La Vaca, in a more virgin part of the 
same general area as Camp Pital. In 1931, he made a brief 
visit to the large banana plantations of the Chiriqui Land 
Company at Puerto Armuelles and Progreso. The latter 
station is situated a few miles inland from the coast, on the 
