Abstract
Among the entomological material collected on the fourth expedition of the Los Angeles Museum-Channel Islands Biological Survey there are specimens representing four previously unknown species of the scarabaeoid genus Polyphylla, descriptions of which appear below. In addition, opportunity is taken at this time to name a species from the upper Owens Valley region of California from a small series of specimens which has been acquired in recent years by the Los Angeles Museum. <br /><br />
