Greene, B. 1990 December 18 (continued) fall. The tail wozzed on the floor in a regular cycle of sinuous curves from posterior to anterior, on which were superimposed (or resulted in?) lateral bending - speed was >= 1 lateral cycle/sec and seemed slower than I remember in thotoca. at 2 min 48 sec movement stopped, and after 5 min and 16 sec I could not elicit further motion by pinching the tail. During tail flippej the piece switched from verte up to closure up once, and there was essentially no net change in position after it hit the floor. From 1930-2030 h I checked the Cantarano Swamp and SOR to 350m, then out CES to 650m and back to Station by 21/5h - no snakes. at 2159hd found a small adult Imantodes imnotatus on the same palm, ~1.2m high, reaching out to the same sapliq as last night - virtually even the same posture. at 2205h it was still in the same position. December 19 From 0915-1100h I walked SOR, SHO, SUA, CC, and CCC in a gray drizzle - no snakes. At lunch Ronald Suarez gave me a juvenile ? Bothrops asper (15.1g, 320+59mm) woman found while cutting grass around the conedor - no palpable food. Went to Arboretum w/ Jisa at ~1430h; no snakes. At ~2230 h Jisa showed me a large clerid spider (cephalothorax~23mm) on a troneliq ~1.1m above ground on a palm stump in the lab clearing, eating a small Eleutherodactyls sp. (SVK~18mm). No snakes in Cantarano Swamp ~2330h.