.'-{4:2 I'ltici rsity of California Publications in Zoology [Vol. 10 



San Jacinto region 



desertorum 



Fig. B. Diagram showing individual and geographic variation in length 

 of tail of certain adult white-f >oted wood rats. Solid lines, males; broken 

 lines, females; figures at left and right of these lines, respectively, indi- 

 cate numbers of individuals measured; length of lines shows range of 

 individual variation; points connected by solid and broken lines, respec- 

 tively, mark positions of averages. Again note general reduction in the 

 dimension geographically from the San Diegan district (at left) through 

 the San Jacinto region to the desert. 



