June 9 BANGS — THREE NEW WEASELS 57 
1899 
postorbital processes, 14.4; least width behind postorbital processes, 7.8; 
length of single half of mandible, 29. mm. 
Remarks.—The two specimens upon which the new form is 
founded were collected by Charles A. Allen,—one at Point 
Reyes, June 19, 1896, in summer pelage, the other at Nicasio, 
Jan. 2, 1899, in winter pelage. The two agree closely, and differ 
from examples of true 7. xanthogenys from southern California in 
their smaller size, shorter tails and very much richer — less 
pallid — coloring. 
£. x. mundus is apparently very different from P. x. oregonensis 
Merriam, the latter being a much larger weasel, with the facial 
markings very much restricted. 
