MUUID^— 81GMODONTBS— H. LEUCOPDS 80NOR1EN818. 



87 



other.-i, tlic tail seems tu run a little shorter than an average, but not tangibly 

 «so, nor is it beyond extremes we have tiemonstrated for ordinary leucopus. 



The following series is from the wooded mountainous region of 

 Arizona:— . , , 



This series* w^a taken in the store-houses at Fort Whipple, where the 

 mice had taken up v <eir quarters, and seemed as thoroughly domesticated as 

 ordinary house-mice. It unquestionably represents but a single species, read- 

 ily referable to the variety sonoriensis, which we here have in all stages, from 

 the suckling young to the adult. With the single exception below mentioned, 

 tiiere is notliing whatever of the eremicus stamp in the series. The soles are 

 very furry indeed, owing, probably, to the fact that the animals were mostly 

 taken in cold weather; the tails are well haired and bicolor, and noticeably short. 

 In general coloration, these animals are darker than Palmer's desert examples, 

 and, in fact, not distinguishable in this respect from ordinary leucopus of New 

 England. But the ears seem to run a little larger than in Eastern United States 

 examples ; and they reach, in No. 8443, a size equal to that of eremicus. This 

 same No. 8443 also differs from all the rest in having the tail barely shorter 

 than the head and body, instead of upward of an inch shorter, and indistinctly 

 bicolor. Its coloration leans toward that of eremicus in the pinkish-fulvous 



*It repreventB what we orroneouHly called " Hmpmomyii eremioiM" in our article in the American 

 Naturalist, i, 3(M ; bat the name i« probably correct aa far na 8443 is concerned. 



