This field guide covers reptiles and amphibians found from Northern Mexico to Alberta. With the variety of chuckwallas, whiptails and other localized lizards and snakes in Baja California, it is an indispensable guide to that region. Baja endemics are featured on four of the book's 56 plates. P.S. It's true that Santa Catalina Island has a rattleless rattlesnake -- although it's retiring and hard to see. With color photographs, newly revised range maps and very good descriptive information.  (FG08, $22.00)