DESCRIPTION OF A NEW MOUSE FROM NEW 



MEXICO. 

 ffesperomys ( Vesperimus} Anthonyi sp. nov. 



BY DR. C. HART MERRIAM. 



(Read March 19, 1887). 



During the spring and summer of 1886, Mr. A. W. Anthony, 

 of Denver, Colorado, made his headquarters- at Camp Apache, 

 Grant county, New Mexico (about lat. 31 20'). Camp Apache 

 is in a hot desert region in the extreme southwestern corner of 

 the Territory, and only about four miles from the Mexican 

 boundary. 



The following extract from one of Mr. Anthony's letters 

 sufficiently describes the region. He writes: "You can form 

 some idea of my location when I tell you that our nearest 

 water is a very small spring nine miles across the valley, 

 from which all our water is carried in wagons. The only 

 trees within forty miles are a few very small stunted cedars 

 and oaks. The only other vegetation consists of cacti and 

 other plants characteristic of these hot dry deserts." 



While in this region Mr. Anthony made a valuable collec 

 tion of mammals, which he has very kindly presented to me. 

 Among other things of interest it contains five specimens of a 

 pretty little mouse, hitherto unknown in the United States, 

 which I believe to be undescribed, and which, therefore, I 

 take pleasure in dedicating to its discoverer. In coloration,* 

 proportions, and cranial characters this mouse differs so rad- 



