Henrickson 1950 "Phyllobates rubris" Nov. 23 5km. S. Villavicencio, 1600ft., Meta, Colombia, 5. A. #1601 taken from under rotting slab off palm trunk (10' long x 11" wide x 1"-2½" thick) lying with hard surface down on bare, damp clayey soil. Temp. of soil = 24.8° C. Temp. of air at 6"= 28.3° C. Soil formed cast, did not break or topping. Many fine roots matted through soil. The piece of cover lay at the side of a forest trail which ran down a cleared lane about 10' wide. Straight up, therefore, was a clear space allowing a short period of insolation; otherwise the dense forest gave almost complete shade. The spot was about 5' or 6' above the stream level, almost level (cut banks to water of stream) and about 30 ft. from the Rio Ocoa. The frog began to hop rapidly when uncovered. #1602 was taken from under a piece of dead wood about 3' x 8" x 3", in a similar spot along the same trail. See Dr. Stebbins notes for color description.