The Konashen Community Owned Conservation Area (COCA) - a stretch of 625,000 hectares of forest in the southern region of Guyana - is relatively unexplored and considered to be one of the last large intact areas of tropical wilderness remaining in Guyana. The data collected during a rapid assessment survey, summarized in this volume, indicate that the forests of the Konashen COCA - maintained primarily by members of the Wai Wai indigenous group - are in very good condition and support rich biodiversity. The assessment team recorded twelve species that are likely new to science as well as more than sixty species found for the first time in Guyana and a number of threatened and endemic species.