Mosquito infection rates. Dissections were
made of a sample of An. albimanus from both
the biting and inside-resting portions of the
population for the presence of Plasmodium in-
fections. Examinations were made both of guts
for oocysts and salivary glands for sporozoites.
Priority was given to mosquitoes biting in the
early evening hours outdoors, since we wished
to assess the risk of extra-domiciliary transmis-
sion, but we also dissected a sample of inside-