New Genera and Species of North American Geophiloid Centipeds

The new forms diagnosed in the present paper are represented in collections that have recently come into the author‗s hands. The more important of these collections were made by Stanley and Dorothea Mulaik, of the University of Utah, who collected in Arizona and California; Dr. J. M. Linsdale, of the Frances Simes Hastings Natural History Reservation in Monterey County, California, where his material was secured; and L. D. Christensen, L. S. Jones, and D. W. Clancy in the course of soil investigation in Texas, Arizona, and Oregon, their material being transmitted for study by the U. S. Bureau of Entomology and Plant Quarantine. Single species were also received from Dr. J. C. Chamberlin, Oregon; Mr. W. M. Pearce, California, and, several years ago, the late Dr. W. M. Wheeler, Arizona. The writer wishes here to express his appreciation to these gentlemen. All material is at present retained by the author.