XIII ALOPECOIDS AND THOOIDS AI7 
members of this genus can, according to Professor Huxley, be 
sorted into two series by certain cranial characters. The two 
Fig. 207.—Fennec Fox. Canis zerda. xt. 
series he termed the “ Alopecoid ” or Fox-like, and the “ Thooid ” 
or Wolf-lke. It was suggested that the generic name Vulpes be 
Fic. 208.—Prairie Wolf or Coyote. Canis latrans. xt 
used for the former, and Canis for the second. The characters 
which will be dealt with immediately are also to be noted among 
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