2 4 



Peromyscus leucopus noveboracensis (Fischer). North- 

 eastern White-footed Mouse. 



Abundant and generally distributed throughout the island, 

 making its squirrel-like nest of dry grasses, slivers of bark, 

 feathers, etc. Sometimes it builds its nest in a clump of 

 briers, or in the branches of trees, usually utilizing some 

 deserted bird's nest for a base, but more frequently the nest 

 is placed in some hole or crevice in a stump or tree, often 

 under a pile of wood, a log or a stump, and even an old oil- 

 can may do service as a shelter. In fact any cavity is chosen 

 that will afford shelter and protection. In winter it is com- 

 mon to find several occupying the same nest, and on two 

 occasions I have found as many as sixteen in one nest. 

 There is considerable variation among the White-footed Mice 

 found on Long Island ; but in most cases they can be safely 

 referred to the variety noveboracensis. 



Microtus pennsylvanicus (Orel). Meadow Mouse. 



Abundant in the open upland fields as well as around the 

 borders of swamps and wet meadows. It is a noticeable fact 

 that the largest specimens I have met with have been taken 

 in dry upland fields. The Gull Island Mouse (Microtus neso- 

 fliilus Bailey) is apparently extinct, as I could find no signs 

 of them on the island in 1898. 



Microtus pinetorum scalopsoides (And. and Bach.). 

 Northern Pine Mouse. 



This mouse is one of the most abundant in dry upland fields 

 and woods. I have never met with it around wet meadows 

 or marshes where the Common Meadow Mouse is so fond of 

 making its home. Its nest of dry grass is generally built 

 beneath the surface of the ground, where the young, two to 

 four in number are reared. I have never heard of a nest con- 

 taining more than four young. 



