1927 P. 5 San Jose del Sacare, Dept., Chalatenango, Salvador and 12710 so closely resembled the bark on the oak trees that it was very difficult to locate them. One which started off through a pine was knocked down when its mate escaped. While looking for signs of Neotoma under some large boulders today, I saw two bats of the Genus Glossophaga. March 13, 1927- Mammals seem to be very rare in this region. Fifty five rat and mice traps turned out four specimens this morning. It is a race between the ants and me to see which gets to the specimens first. Thus far I have been fortunate to run my line before the sun gets up. March 14, 1927- Today I caught another Peromyscus of the same species as No. 12711, the ants had so destroyed it that I threw it away. This mouse was caught in a dry ravine in the oaks not more than one hundred feet from where I