Carl and Evelyn Ernst have completely revised their landmark reference Venomous Reptiles of North America to present the most comprehensive review of these animals in years.

Volume One of this definitive work presents dramatically improved species accounts of the venomous lizards and elapid and viperid snakes found north of Mexico's twenty-fifth parallel. Volume Two will cover the twenty-one rattlesnakes found in the United States, Canada, and, for the first time, species found only in northern Mexico.

Ernst and Ernst have painstakingly researched and verified the...