Herpetofauna of Mount Roraima, Guiana Shield Region, Northeastern South America

The Guiana region of northeastern South America is an area ofhigh biodiversity, and the varied habitats on the tepuis of the re-gion support a significant portion of this diversity. The zoogeog-raphy of the pantepui region has been a recent topic of interest,with several sources of published data (Duellman 1999; Gorzulaand Senaris 1999; Hollowell and Reynolds 2005a; Hoogmoed1979a; McDiarmid and Donnelly 2005).The herpetofaunal communities of several tepuis have been de-scribed (Donnelly and Myers 1991; Gorzula 1992; McDiarmidand Paolillo 1988; Myers 1997; Myers and Donnelly 1996, 1997,2001). Mount Roraima, the most famous of these table mountains,has been explored extensively (McDiarmid and Donnelly 2005).Although numerous specimens have been collected on Roraima,these collections have never been summarized or analyzed.Roraima (05o12'N, 060o44'W) is one of the highest points innortheastern South America, and it marks the boundary betweenGuyana, Venezuela, and Brazil. The summit plateau, from 2600 to2810 m elevation, is some 34 km