Three New Serotypes of Arizona (19:23:31, 16:29:25, 15:26:31)

The biochemical and serological behavior of three new serotypes of Arizona are described. New type 16:29:25 was recovered from a snake (Naja naja), a rat (Rattus rattus), and a stool sample of a man suffering from gastroenteritis. Types 15:26:31 and 19:23:31 were obtained from snakes belonging to the species Oligodon arnensis and Eryx conicus, respectively.