in collaboration with Bruce Cutler and Stefan Heimer The available information, personal observations, and study of one facet of the beauties of the tropical rain forest of Panama is gathered into a much needed volume which includes the physical, biological, and spider environment of Panama. The complete list of known Panama spiders with literature references and a key to the families and most genera provides the user with an up-to-date guide to this fauna. With over 350 illustrations, numerous charts, graphs, and tables, the coverage of this volume goes far beyond the geographical boundary of the study, making it useful to all students of spiders.