Ateneo, H. 1989 July 4 Shopped in the morning, then joined Alejandro Solerzaro and Jose Maria Gutierrez (Director of the Instituto Clodomiro Picado) for lunch. Spent the afternoon looking at snakes at I. C. P. and Serpentario. July 5 Estacion Biologica La Selva, Heredia Prov., Costa Rica Arrived here after an uneventful trip, ~1030 hr, in a light drizzle. Cloudy all afternoon. ~2000 hr I walked out the CES to ~200 m, then back through the Cartarana swamps - no snakes, water almost up to the boardwalk (there was reportedly a tremendous storm last night), and scattered frogs (Hyla loquax and others) calling. Saw a small Bufo marinus (~80mm) on sidewalk in the bald clearing. July 6 At 0559 hr I saw a hutia, freshly wet, dive @ a log near the N. bank of the Rio Puerto Viejo, below the La Selva Bridge. It resurfaced a few seconds later ~50-60 m downstream, then dove again. Photographed the live Scelopops - only response to handling is violent thrashing, often w/ body extended semiaerid (see also July 14, 1989). Examined the feces - scattered arthropod parts, but not much for sign of the initial feces. Most of it was unidentified small debris. The parts were yellow-brown, and at least three looked like segments of Scolopendra. From ~0900-1000 hr I walked around the area ~500 m CES, near Don Perry's Leitkys tree, where several Hadrosis have been seen. Then out to the Arboretum, where