Hendrickson 1950 Journal 46 Nov. 14 Bogota, 8500ft.; Cundinamarca, Colombia, S.A. and tentatively identified some of the material we have collected. Dr. Borrero gave us a rat skin and skeleton for Dr. Pearson. Drs. Richter and Ozorno offered us a live specimen of a Boa which they had collected; they will keep it alive for us until we return from Villavicencio. At 1:30 P.M. we held a conference with Paulino and Perico, and agreed upon a satisfactory termination of their employment with us. At about 4:00 P.M. we walked up on the hills at the E. side of the city, accompanied by Paulino. We re-visited the pool at which we previously (Oct. 15) collected tadpole-carrying Phylllobates, and found them again. We then worked along the slopes higher-up, above the road and above a canal running above the road. See species accounts # for hybrid (?) frog, Phylllobates subpunctatus, Obojus , Iradia, and Lioccephalus. Dr. Stebbins collected 2 snakes (Atractus Leinadophis ). Returning along the road at dusk, we heard