. Bulletin. Science; Natural history; Natural history. SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 1. Locality codes used in the quantitative analyses. The closed circle is the type locality for S. arizonae arizonae, the closed triangle is the type locality for S. arizonae plenus, and the closed square is the type locality for S. hispidus eremicus. Forty miles is equal to approximately 65 kilometers. Sigmodon arizonae plenus. Specimens examined (46). USA, Arizona, Yuma Co., vie. of Ehrenberg (4), 1 (CSULB); 2 (UA); 9 (UIMNH); 1 (USNM); vie. of Parker (5), 14 (UIMNH); California, Imperial Co.


. Bulletin. Science; Natural history; Natural history. SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 1. Locality codes used in the quantitative analyses. The closed circle is the type locality for S. arizonae arizonae, the closed triangle is the type locality for S. arizonae plenus, and the closed square is the type locality for S. hispidus eremicus. Forty miles is equal to approximately 65 kilometers. Sigmodon arizonae plenus. Specimens examined (46). USA, Arizona, Yuma Co., vie. of Ehrenberg (4), 1 (CSULB); 2 (UA); 9 (UIMNH); 1 (USNM); vie. of Parker (5), 14 (UIMNH); California, Imperial Co., Palo Verde (2), 1 (CSULB); 2 (LACM); Riverside Co. only (3), 1 (CSULB); 4 (LACM); 2 (USNM); San Ber- nardino Co. only (7), 8 (CSULB); 1 (USNM). Results Qualitative analysis divided specimens into two groups. One group of individ- uals was from the Colorado River south of the Palo Verde Mountains and the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy


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