. An account of the birds and mammals of the San Jacinto area of southern California with remarks upon the behavior of geographic races on the margins of their habitats . Fig. B. Diagram showing individual and geographic variation in lengthof tail of certain adult white-f >oted wood rats. Solid lines, males; brokenlines, females; figures at left and right of these lines, respectively, indi-cate numbers of individuals measured; length of lines shows range ofindividual variation; points connected by solid and broken lines, respec-tively, mark positions of averages. Again note general reductio
. An account of the birds and mammals of the San Jacinto area of southern California with remarks upon the behavior of geographic races on the margins of their habitats . Fig. B. Diagram showing individual and geographic variation in lengthof tail of certain adult white-f >oted wood rats. Solid lines, males; brokenlines, females; figures at left and right of these lines, respectively, indi-cate numbers of individuals measured; length of lines shows range ofindividual variation; points connected by solid and broken lines, respec-tively, mark positions of averages. Again note general reduction in thedimension geographically from the San Diegan district (at left) throughthe San Jacinto reeion to the desert. 1913] Qrin nell-Swarth: Birds and Mammals of San Jacinto 343intermedia San Jacinto region desertorum. Fig. C. Diagram showing individual and geographic variation in lengthof hind foot of certain adult white-footed wood rats. Solid lines, males;broken lines, females; figures at left and right of these lines, respectively,indicate numbers of individuals measured; length of lines shows range ofindividual variation; points connected by solid and broken lines, respec-tively, mark positions of averages. Again note general reduction in thedimension geographically from the San Diegan district (at left) throughthe San Jacinto region to the desert- 344 TJnivt rsity of California Publications in Zoology I Vol. 10 accrue from the smallness of the series involved, rather than tobe of any deeper significance. From Snow Creek, up in the foothills three miles southwestof Whitewater, there are thirteen specimens, including adultsand young. These are distinctly paler than the average of theCabezon and Banning series. All, in fact, are to be matchedfrom desertorum in seasonally comparable pelage. In amo
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