I. A Further Study of Variation in the Gopher-snakes of Western North America. II. Description of a New Species of Rattlesnake (Crotalus Lucasensis) from Lower California. III. Description of a New Subspecies of Boa (Charina Bottae Utahensis) from Utah. IV. Description of a New Lizard (Dipsosaurus Dorsalis Lucasensis) from Lower California