This is a new searchable database (registration required) of the Orthoptera of the world including all genera and species of Tettigonioidea, Grylloidea, Tridactyloidea, and Tetrigoidea. The two remaining major groups, Gryllacridoidea and Acridomorpha, will be available sometime in the early 1998. The database was compiled by Daniel Otte (Academy of Natural Sciences in Philadelphia), and Piotr Naskrecki (University of Connecticut), and is supported by the National Science Foundation. The format of the database resembles a traditional taxonomic cataloge in that each record contains all taxonomic information, synonymy (with references), type locality, and type depository. In addition, the Tettigonioidea database includes over 3,100 images, mostly of the actual type specimens. Also included, are sound recordings for many species.