Greene, H. 1982 20 March Left about 0730 w/ Manuel Santana - walked East River Rd to Far Loop Trail, out it to Cortial Trail to ~700m, and back via Near Loop Trail. At 0830 I grabbed a large (~2m) Chrisinus grandisquamos as it crawled over a fallen log - snake thrashed, inflated body, and struck. This was at 290m on the Cortial Trail. At 0958 grabbed a tiny Dendrophidion spinites (?) crawling rapidly off the trail at 480m on the Near Loop. Handling it later in the lab I saw it do a very Pseudo - like defensive display, except that its neck was not inflated vertically. Napped in afternoon. Entire evening shot by emergency w/ the cook, Eric, who seemed to be having a heart attack - took him by litter and jeep to Puerto Viejo, where an ambulance eventually took him to San Carlos - turned out to be gall bladder trouble. (See 22 March) 21 March Walked to 700m on the Cortial Trail w/ Manuel Santana and Beth Baker. Only snake was a Rhadinaea decorata at 275m on the Near Loop Trail, crawling in sun at 1006 h. Thrashed and musked when grabbed. After supper went frogging w/ Jay Savage, Manuel, and Beths - 2 Bolitoglossa columnea on leaves <1m above ground, 1 moving, 1 still; 1 Kylya straccata, general 1 H. eleareochrova, several Eleutherodactylus.