This beautifully illustrated guide to the spiders of North America, north of Mexico, provides more than 1,400 illustrations and keys to the genera in 68 spider families. The book includes more than 550 genera. The manual contains 72 chapters and a wealth of information including an introduction to spider morphology, natural history, collecting techniques and preservation methods; an overview of the current status and most recent developments in spider evolutionary history; a key to the 68 families of spiders found in North America, north of Mexico; keys to the genera in each of these 68 families; an etymological dictionary explaining the derivation of the names of spider genera and families; and a well illustrated glossary.