328 NEW YORK STATE MUSEUM 
South Buffalo (January 6, 1898) an acquaintance of mine with two com- 
panions secured 54 rats along the railroad embankments within the city 
limits, and another person shot 18 in the same section.” Of the musk- 
rat on Long Island Mr Helme says, ‘‘ It is common in all sections where 
there are suitable ponds, swamps or streams. It occasionally is found in 
the salt marshes.” 
Synaptomys cooperi Baird og lemming 
1858 Synaptomys coopert Baird, Mam. N. Am. p. 558. 
1896 Synaptomys coopert Batchelder, Boston soc. nat. hist. Proc. 
Dep Sle 
Type locality. Northern New Jersey? 
faunal position. The bog lemming is probably a Canadian mammal, 
but it occurs in cold situations throughout the transition zone and even 
in the northern edge of the upper austral zone. 
Hfabitat. Cold bogs, either wooded or open. 
Distribution in New York. While Syxaptomys cooperi probably occurs 
in nearly every county of the state, it has as yet been taken in only two 
localities, Beedes, Essex co. and Glenwood, Erie co. 
Principal records. Batchelder: ‘‘ In the summer of 1895 I was sur- 
prised to find this species in the Adirondack mountains at Beedes, Essex 
co. N. Y. On August 16 I set 36 ‘cyclone’ traps baited with rolled 
oatmeal in some low ground, wooded chiefly with large yellow birches, 
sugar maples and beeches, with more or less thin, tall undergrowth (chiefly 
Acer spicatum Lam. and A. pennsylvanicum L.), and with many mossy rotten 
logs and stumps scattered over it. A dozen of the traps were along the 
edge of some wetter, almost swampy, ground where more of the larger 
trees had been cut and there was a thick growth of small trees, chiefly 
Acer spicatum. ‘Two days later, August 18, I found an adult male Syz- 
aptomys coopert caught in a trap set at the foot of a large rotten stump in 
the edge of the swampy ground. Three days later I caught an immature 
female near by, also in the edge of the swampy ground, in a trap placed 
under a rotten log. ‘Two days after this I got still a third, another adult 
male, this time in the open drier part of the woods 30 or 4o yards from 
the wet ground ” (’g6a, p. 185). 
Mr Savage has sent me for examination the skin and skull ot a Syn- 
aptomys cooperi that he shot at Glenwood, Erie co. December 31, 1897. 
When killed the animal was running in a sleigh track in the woods. The 
specimen is not fully mature but I have little hesitation in referring it to 
this species. 
