Organised compendium bringing together information on scorpion nomenclature, biogeography, distribution and phylogeny. Covers the status of the entire field of Scorpion Taxonomy at the beginning of the New Millenium, by authoritative and critical researchers working in the field, and includes type data, tracing of full synonymies of all names, clarification or critical discussion of known nomenclatural problems, comprehensive cross index, and notes on biogeography and phylogeny.