Paperback in origianl blue wrappers in very good condition, faded spine. Bulletin of the American Museum of Natural History Number 237. This report describes the results of bat inventory fieldwork at Paracou, a lowland rainforest locality in northern French Guiana. Working within a 3-km radius over the course of 168 sampling days from 1991 to 1994, 3126 bats were captured, of which about 78% were taken in ground-level mistnets, 10% in mistnets suspended above ground level, and 12% at roosts. 78 species were identified, including 10 emballonurids, 2 noctilionids, 1 mormoopid, 49 phyllostomids, 1 furipterid, 1 thyropterid, 5 vespertilionids, and 9 molossids.