About Pseudalsophis occidentalis (Van Denburgh, 1912)
Pseudalsophis occidentalis, originally described by Van Denburgh in 1912, is commonly called the Western Galapagos racer. It is a species of snake that belongs to the family Colubridae. This snake is native to the Galápagos Islands, where it occurs on Fernandina Island, Isabela Island, and the two small nearby islets of Isla Cowley and Isla Tortuga.