. Biology of the Heteromyidae. Heteromyidae. BIOGEOGRAPHY 335 120 110 100 30 20. C. spinatus-^ 0 200 400 800 _L_I \ \ I kilometers 120 110 100 Fig. 11. — Distributions of Chaetodipus intermedius and C spinatus. medium-sized species. The small bodied forms include three species (C. arenarius, C. fallax, and C spinatus) with distribu- tions confined to the Baja California/south- ern California region. C. fallax occurs in the California grassland, American Desert, and Baja California provinces of southern Cal- ifornia and northern Baja (Fig. 9). C. arena- rius is restricted to the southern extens
. Biology of the Heteromyidae. Heteromyidae. BIOGEOGRAPHY 335 120 110 100 30 20. C. spinatus-^ 0 200 400 800 _L_I \ \ I kilometers 120 110 100 Fig. 11. — Distributions of Chaetodipus intermedius and C spinatus. medium-sized species. The small bodied forms include three species (C. arenarius, C. fallax, and C spinatus) with distribu- tions confined to the Baja California/south- ern California region. C. fallax occurs in the California grassland, American Desert, and Baja California provinces of southern Cal- ifornia and northern Baja (Fig. 9). C. arena- rius is restricted to the southern extension of the California grassland and Baja Cali- fornia provinces on the Baja Peninsula (Fig. 10). The range of C. spinatus (Fig. 11) over- laps that of C. arenarius (Fig. 10) through- out most of the Baja Peninsula, but the for- mer occurs farther north into southern California. C intermedius and C penicillatus are the two most widely distributed species in the small size category. Both have similar dis- tributions that encompass southern Cali- fornia, Arizona, New Mexico, northern So- nora. Chihuahua, and Trans-Pecos Texas (Figs. 10, 11). The other two polytypic spe- cies in the small size category (C nelsoni and C pernix) both have relatively restrict- ed distributions. C. nelsoni is confined. 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 Brown, James H; Genoways, Hugh H. [Stillwater, Okla. ?] : American Society of Mammalogists
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