Venomous Reptiles of the United States, Canada, and Northern Mexico Heloderma, Micruroides, Micrurus, Pelamis, Agkistrodon, Sistrurus

The first volume contains species accounts of the venomous lizards and elapid and viperid snakes found north of Mexico's twenty-fifth parallel. Volume two covers the twenty-one species of rattlesnakes found in the United States, Canada, and northern Mexico.