D.A. Good 1987 Journal Velein Cacao, Prov. Guanacaste, Costa Rica 26 August cleared along the stream N of the summit of the Casa Frank trail to look for frogs, particularly Centrolenella. On the way to the stream, along the Casa Frank trail, we picked up 2 Bothrops lateralis — these seem to be the commonest snake around here. At the stream frogs were not common — heard several Eleutherodactylus diastema, which are common everywhere, but slight more. We collected 2 E. fleischmanni, 2 Hyla ruficulris (one recently transformed, still with a substantial tail) on low vegetation, a H. manoleva, superficially very similar to H. ruficulris, another Hyla (possibly H. debilis or H. lue by the Savage Key) and finally a Centrolenella. This last (C. fleischmanni) was calling from the under surface of a leaf ca. 12 ft off the ground — I pushed the tree over sufficiently for Cattfish to reach the frog. Back to Casa Frank ca 9:00. Heaviest rain we’ve had so far here, all afternoon it was coming down in buckets. Also seen tonight were a 4-eyed possum (not Philander) + some small mammal (ca. 4" long) in the stream (submerged). 27 August Notes written 31 August. Usual timing today: Breakfast 6:00, spent morning taking care of animals. In afternoon spent some time down along the streams below Casa Mango (toward Finca Hardd) looking again for Bolitoglossa robusta but finding none — only a Rana Wassenaarsii + an Eleutherodactylus. We also returned to these streams in the evening but found only Hyla ruficulris, which we didn’t collect. CF also found an Eleutherodactylus.