PSYCHE VOL. XXIII AUGUST, 1916 No. 4 NOTES ON ANOPLURA AND MALLOPHAGA, FROM MAM-MALS, WITH DESCRIPTIONS OF FOUR NEW SPECIES AND A NEW VARIETY OF ANOPLURA. By G. F. Ferris, Stanford University, California. Under an arrangement made by the Department of Entomology of Stanford University with Dr. Joseph Grinnell, director of the Museum of Vertebrate Zoology of the University of California, the author was enabled to accompany a collecting party from the museum, engaged during the summer of 1915 in a Biological Survey of Yosemite National Park, with the privilege of examining for parasites all the birds and mammals taken by the expedition. In addition, through the kindness of Dr. Grinnell, the author was also permitted to examine the skins in the museum, and it is upon the material obtained in these two ways, that this paper is for the most part based. It is in the nature of a supplement to "The Anoplura and Mallophaga of North American Mammals," by V. L. Kellogg and G. F. Ferris (1915), in which there is a discus-sion of most of the old species listed in this paper, together with a host list of the Anoplura and Mallophaga from North American mammals. The examination of museum skins has proven to be an excel-lent method of collecting Mallophaga and Anoplura, nearly as much material being procured in a few days of such work as could be obtained in an entire summer of field collecting. There is some danger that records obtained in this manner may be unre-liable due to the packing together of different hosts, but this danger is really astonishingly small, although cases of this nature were, indeed, met with. Certainly all records based entirely upon the examination of museum skins should be checked up by field
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