Mustangi, Meika A. 1993 journal 38 P.E. Ilhabela - SP On the first day, we captured 6 Philander at 650m, the highest density I've ever observed. Chawaeza spp (Aves: Formicariidae), "tovaca" were trapped quite frequently at that site too. One was attacked and killed inside the trap. We caught Oryzomys at 200m but interestingly, not at 650m. Proechimys also showed an interesting pattern with only big, adult individuals being collected at 650m and only juvenals collected at 200m. The Proechimys captured at 650m seemed particularly large and red ("castanho") to me. It would be interesting to find out that there are 2 species on the island, separated altitudinally. The Philander individuals so far collected on the island also look different from Philander opossum from the mainland to me. We found some bean-shaped, 1cm long, seeds gnawed on by some mouse, which we collected for identification. The only list of mammals for the island is by Wunderwahlt (1929) and includes: Caluromys philander, Marmosa murina (!), Sciurus ingravii, Oryzomys nigripes, Oxymycterus, hispidus, Holochilus brasiliensis, Nelomys thomasi and Proechimys iheringi (type local-