In attempting to arrange the subspecies of _D. ordii_ according to degree of specialization, the geographic positions of the subspecies have been considered along with the information provided by the above-mentioned indices. These indices were used in the same way as were the indices for the species of the genus. In Tables 5 and 6 and in the accounts and maps the subspecies are arranged from the least specialized to the most specialized. TABLE 5 INDICES FOR THE SUBSPECIES OF _DIPODOMYS ORDII_ ====================================================== Body Pedal Cranial Bullar ------------------------------------------------------ richardsoni 88.85 34.35 60.95 88.25 oklahomae 86.75 35.5 61.7 90.25 compactus 127.7 37.25 59.75 88.35 sennetti 94.25 34.0 62.85 85.95 evexus 80.1 35.7 60.5 92.9 medius 80.4 33.7 63.55 85.9 obscurus 62.95 86.4 terrosus 75.25 35.05 61.6 86.85 fremonti 80.55 34.7 62.9 85.5 uintensis 77.2 35.3 62.3 86.0 monoensis 85.4 36.4 63.4 85.6 ordii 79.05 37.6 62.75 86.9 luteolus 75.0 37.05 62.35 86.3 extractus 83.65 34.35 64.3 84.25 chapmani 75.05 36.35 62.9 85.65 montanus 80.4 36.15 64.25 82.5 cinderensis 85.1 37.2 65.15 84.75 fetosus 81.8 38.85 63.95 83.95 utahensis 80.2 36.95 64.45 84.35 columbianus 78.5 37.55 64.25 84.9 idoneus 72.3 36.6 64.2 85.0 priscus 74.9 39.45 62.3 84.95 celeripes 91.85 38.75 65.0 84.25 cineraceus 75.5 39.1 63.9 84.8 marshalli 81.5 37.3 65.2 83.0 inaquosus 78.05 37.9 64.25 83.05 attenuatus 73.5 37.35 64.0 83.4 fuscus 79.8 39.0 64.3 83.2 longipes 75.7 37.1 64.3 82.75 pallidus 76.9 40.75 64.35 84.65 nexilis 77.1 40.7 64.95 78.45 cupidineus 73.15 39.1 64.1 80.85 palmeri 72.25 37.15 65.1 80.45 ------------------------------------------------------ TABLE 6 NUMERALS (derived from Table 5) ARE INDICATIVE OF THE RELATIVE DEGREE OF SPECIALIZATION OF THE SUBSPECIES OF _DIPODOMYS ORDII_