Distribution and age of the marine Tertiary deposits of the Colorado desert, by W. P. Woodring -- Distribution and description of skull remains of the Pliocene antelope Sphenophalos from the northern Great basin province, by E. L. Furlong -- A Miocene mammalian fauna from southeastern Oregon, by C. L. Gazin -- Additions to the mammalian fauna from the Tecuya beds, California, by Chester Stock -- A new genus of otter from the Pliocene of the northern Great basin province, by E. L. Furlong -- A contribution to the Paleozoic geology of central Oregon, by E. L. Packard.