An ornithological gazetteer and bibliography have long been needed to properly complete Alexander Wetmore's four-part work on the birds of Panamá (Wetmore, 1965, 1968, 1972; Wetmore et al, 1984). This concluding volume describes and locates all of the place names referred to by ornithologists and collectors and provides a comprehensive bibliography. Much of the information is based upon the extensive card files left by Wetmore, but the painstaking labor to expand upon this information and compile an updated manuscript has been accomplished by Deborah Siegel and Storrs Olson.