Thus, since 1943 the recognized subspecies of E. quadrivittatus have been: E. q. quadrivittatus, E. q. hopiensis, E. q. inyoensis, E. q. nevadensis, E. q. umbrinus, and E. q. adsitus.
Methods, Materials, and Acknowledgments
Capitalized color terms, which are used in descriptions and comparisons, are of Ridgway, "Color Standards and Color Nomenclature," Washington, D. C., 1912.
In the synonymy of each subspecies there appears only the first usage of a name, second the first usage of the name combination now employed unless a new combination is proposed by me, and third pure synonyms. The last is recognizable as such because the type locality is appended to each.
Unless otherwise specified, all specimens are in the Museum of Natural History, University of Kansas. The various collections of institutions and of private persons are indicated by the following symbols:
AM—American Museum of Natural History.
BS—United States Biological Surveys Collection.
CM—Colorado Museum of Natural History.
DC—Collection of Donald R. Dickey (now the collection of the University of California at Los Angeles).
FC—Collection of James S. Findley.
KU—Museum of Natural History, University of Kansas.
MM—Museum of Zoology, University of Michigan.
NM—United States National Museum.
UU—Museum of Zoology, University of Utah.
WC—Collection of Edward R. Warren, Colorado College.
Of the external measurements, only the total length and the length of the tail are recorded in table 1. Some field collectors measured the ear from the notch and others from the crown; most collectors measured the length of the hind foot to the nearest millimeter rather than in tenths of a millimeter, as would have been desired. Consequently, I decided against using the lengths of the ear and hind foot in the study here reported on.
The measurements of the skull were made as shown in figure 1.
