prised a number of deer mice in a rather open place. 

 Three of them darted under a board. When the board 

 was lifted, all three had their noses pushed into a shal- 

 low cavity which they had evidently dug in a hurry. 

 Remaining absolutely quiet, they apparently thought 

 they were escaping detection although their bodies 

 were fully exposed. Needless to say, they were not fur- 

 ther disturbed. 



According to some writers, the deer mouse re- 

 sorts to "singing" for its own amusement or perhaps 

 for its mate. Who knows? 



Fischer's Deer Mouse 



Pcromyscus leucopus novcboracensis 



Another species of deer mouse to be found within 

 the confines of Pennsylvania and inhabiting only the 

 forest regions of the mountains, is Fischer's deer 

 mouse. This species is more grayish than Rafinesque's 

 species and there is a greater number of dark tipped 

 hairs on the back which detract somewhat from the 

 clearness of the dorsal band or broad stripe that is so 

 evident in the latter species. 



Fischer's deer mouse is not so common and is 

 generally found in the higher evergreen forests. It is 

 the same size as Rafinesque's deer mouse and has a 

 total length of six and five-eighths inches. The tail is 

 almost three inches long. 



Cloudland Deer Mouse 



Pcromyscus man'iculatus imhiterrae 



The cloudland deer mouse is found only in the 

 highest mountainous regions of Pennsylvania. It is a 



■^ 130 >.- 



