The odonatological fauna of the Maracá Ecological Station in the State of Roraima was studied using material collected in the forests and savannas of its eastern part. Out of the sixty-one species registered from the area, three are new to science(Epipleo neura, Leptobasis and Lestes) and will be described elsewhere, white eight are new records for Brazil (Aeolagrion demerarum, Argia pulla, Hetaerina mortua, Hetaerina west-falli, Metaleptobasis manicaria, Neoneura denticulata, Neoneura gaida, Protoneura amato-ria. The species with a wide geographical range, which are usually common, predominate in the savanna white those with more restricted distribution predominate in the forests. The results emphasize the great resemblance that exists between the fauna of Uaraca and that of Venezuela.