Vol. 31, pp. 161-164 December 30, 1918 PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON THREE NEW SUBSPECIES OF PASSERELLA I LI AC A. BY H. S. SWARTH. (Contribution from the Museum of Vertebrate Zoology of the University of California.) The writer has been recently engaged in a study of the fox sparrows (Passerella iliaca and subspecies) with special reference to the manner of occurrence of the several forms in California. In the course of this work evidence was soon forthcoming demon-strating the existence of certain distinguishable local races, as yet unnamed, the terms megarhyncha and schistacea proving each to cover composites of several forms. As the proposed general account of the group will not be ready for publication for some time to come, it is desirable that designations be affixed to these subspecies in advance of the appearance of the longer paper. One of the first fruits of the study was comprised in a better understanding of the race which Mailliard (Condor XX, 1918, p. 138) has named Passerella iliaca brevicauda, material gath-ered together from various sources by the present writer proving fortunately to include specimens which supplied Mr. Mailliard with the final evidence needed to demonstrate the distinctness of this subspecies. In the present paper three additional races are named, all from California. The total number of recogniz-able subspecies of Passerella iliaca is now sixteen, and all of these occur at some season within this State. Passerella iliaca mariposae, new sulispecies. YOSEMTTE FOX SPARROW Type.— Adult male; no. 25693, Mus. Vert. Zool.; ridge at 7000 feet, near Chinquapin, Yosemite Park, California; June 10, 1915; collected by J. Grinnell; original number 3284. 40— Proc. \MOh. Soc. Wash., Vol. 31, 1918. U61)
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