1934 ] 
Entomological Investigations in Panama 
175 
present at Camp Pital and Puerto Armuelles. They bit man 
and animals with equal readiness. 
Lynchia augustifrons (Van der Wulp). A male and fe- 
male of this species were collected from a Swainson’s toucan, 
Rhamphastos swainsonii Gould, at Camp Pital. 
Stilbometopa ramphastonis Ferris. Two females of this 
species were found on a Swainson’s toucan, Rhamphastos 
swainsonii Gould, at Camp Pital. These proved to be a new 
species and were named and described by Ferris. 
Ornithoica confluenta (Say). Three specimens of these 
flies were collected from two Swainson’s toucans, Rham- 
phastos swainsonii Gould, at Camp Pital. 
Olfersia vulturis Pan der Wulp. Flies of this species 
were collected from four black vultures, Catharista urubu 
(Viellot), that were examined at Camp Pital. Three of 
these birds yielded three flies each, and five were taken 
from the fourth. 
Olfersia spinifera (Leach). Several of these flies were 
taken from a king vulture, Gypagus papa Linnaeus, by Dr. 
Clark at Camp La Vaca. There were many of these flies 
present on the bird but they were very difficult to cap- 
ture. So many escaped that a bed net was hung from a 
limb of a tree and the dead bird placed in it in order to 
secure the flies. Four specimens were collected inside 
the net. The following day one of these flies was captured 
as it alighted upon the head of the native cook and attempted 
to crawl into his hair. The second day another fly of this 
species was found on the outside of the bed net, in which 
the bird had been placed. (It had been left suspended in 
order that it could be used if others with parasitic flies 
were taken.) Probably these two flies were among those 
that had left the bird to escape capture (one or two days 
previously and had later returned to seek their host again.) 
Lipoptena mazamx Rondani. Twelve of these small par- 
asitic flies were found on a brocket deer, Mazama sartorii 
reperticia Goldman, that was killed in the forest near 
Camp Pital. 
