Greene, H. 1989 April 6 (continued) to the genus Atcya , She said there can be marked variation in abundance and species composition of shrimp assemblages by stream, season, and even daily (the last because of rainfall effects). From ~ 1430 - 1700 walked out the CCC and SO R to release the Bothrops nasutus and Cryptophare from yesterday (?), then stopped at the waterfall. Most of the time a fairly heavy rain fell, but before dusk there was scattered sunlight, Joach Ewel (U. Florida) also saw a juvenile B. asper today. Began raining after dinner and continued into the night. From ~ 2000 - 2200 h Sharon and I walked to ~ 650 CES and beach, and through the Ecological Reserve Swamp. More scattered frogs calling than on previous night, and we saw a Naos limifrons asleep on a leaf, a thyla cleaschrea perched on a leaf, and found an Smantole conchua crawling in litter beside the sidewalk, just into forest from the laboratory clearing (2215 hr, 480 + 315 mm, slight odor when handled). Still no water in swamp, nor frogs seen. April 7 Rained all morning. At noon Guillermo brought me a very fresh scat of Felis onca or F. concolor , from junction of the CCC and SSO. He and Joel saw a Leucopternis semiplumbeus eating, or rather holding a stilllive tinnamou chick. Left La Selva at 1330h, to leave San Jose for the U. S. early on the 9th.