72 BANGS — NEW AMERICAN MAMMALS [ya 
a black tip to the tail. From P. cécognanii streatort (Merriam) of 
the coasts of Oregon, Washington and British Columbia, it differs 
in being smaller and much lighter brown above, and in having a 
broadly white belly and white hands and toes. Compared with 
true P. cicognani of northeastern North America, the difference in 
size 1s enormous, and P. muricus is of a different brown color 
above, though the distribution of colors is the same in both 
species. The skull of P. muricus, with its very small audital 
bulla and much inflated squamosals, is very characteristic, and is 
different from the skull of any of the others. 
