Greene, H. 1990 December 15 possibly in pre-eclipsis condition. Response to handling (continued) was to squirm (not especially vigorously) and void visible dark cream, very foul smelling thick fluid from the post cloacal scent glands. Continued periodic rain after dinner. Searched Centarara Swamps from 1830-1900h, no snakes, scattered frogs calling. 2/1950-2100h walked to Arboretum Bridge, released leptodeira, then through Centarara Swamp. Scattered Hyla calling; heard Smilisca baudini going to and from dinner, near the volleyball court on the N. side of the Rio Puerto Viejo. At 2052h caught 140.0g in lab balante a young Boa constrictor (730+85mm - couldn't weigh it because the Dallas Zoo people took my Pesola scales left down here) - it was crawling rectilinearly over a small sapling (where its tail remained) straight along a horizontal fallen limb 2/10cm in diameter, tongue flicking. Froze in my light. No response to gentle handling other than crawling, but it tried to bite when restrained for measurement. There has been no obvious moon since I've been here, so the forest has been dark at night. Returned at 2/45h and spotted a f Agalychnis callidryas perpendicular on a horizontal branch of the same sapling that last night had darted to, 2/5-6m above the trail. At 2200h she was a few cm out the same branch, parallel and facing out, in anoplus. December 16 Rain off and on all night, Rio Puerto Viejo brown & swollen. Bette Jorielle and John Blake told me they saw an anoplus pair of Agalychnis (sp.? ) on the boardwalk railing last night in between my first and second