1927 P.4. Hacienda Chilata, Dept. Sonsonate, Salvador April 23, 1927 - The Peromyscus taken today were caught in the coffee proper as well as in the uncleared area where I have been trapping. All of these specimens were caught on the ground, there being destroyed by ants, I threw away. Nyctomy's, No. 12822, was caught in the tree where I caught No. 12809, and Peromyscus No. 12814. The prize of the day was Tylomys, No. 9896, which added another species to my list for the country. Night before last and the night before that I had some small snap-traps setting at the base of a very large tree where I noticed what I took to be Peromyscus droppings. After two nights of having these little traps thrown and their bait gone I decided to set a large snap trap. This morning that trap had a Tylomys. The tree was an immense thing perhaps ninety feet high. The trunk has many cervices in it. The trap was set on the ground where there