464 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 84 



found on the Williams and Greenbrier Rivers. According to Brooks 

 (1929, pp. 536-537) freshly cut trees and a dam were found in 1925 

 in Hampshire County on Tarcoat Creek, an indirect tributary of the 

 Great Cacapon River. It was thought that these beavers had 

 entered the State by way of the Potomac and Great Cacapon Rivers. 

 Shortly afterward this colony moved to North River where suitable 

 food was more plentiful. This colony disappeared within three 

 years. 



Family CRICETIDAE 



REITHRODONTOMYS HUMULIS IMPIGER Bangs 



Short-eaked Harvest Mouse 



Thaddeus Surber found that this harvest mouse was comparatively 

 common in fields overgrown with weeds near White Sulphur Springs. 

 Five specimens were sent to Outram Bangs and one of them became 

 the type of this race. Others were subsequently acquired by the Bio- 

 logical Survey from the same collector. The Museum party did not 

 collect any specimens at this locality. Howell (1914, p. 21) has con- 

 cluded that this is "a rather poorly marked race of humulis occupjdng 

 the northern end of the range of the species." 



Greenbrier County: White Sulphur Springs, 9. 



REITHRODONTOMYS HUMUUS MERRIAMI Allen 



Merriam Harvest Mouse 



One specimen was trapped at Ceredo by A. H. Howell on July 29, 

 1910, in a low uncultivated field overgrown with grass and weeds and 

 situated between the railroad tracks and the Ohio River. At the 

 time of our visit in April 1936, all these lowlands including this field 

 had been flooded recently by the Ohio River. Our trapping there 

 indicated that all the smaller mammals had either been destroyed or 

 driven away by this flood. Elsewhere it has been reported that this 

 mouse generally selects a matted tangle of grass, weeds, or briers^ 

 often in wet bottomland or at edge of a marsh. Hence it is quite 

 likely that the floods periodically reduce its numbers. 

 Wayne Covinty: Ceredo, 1. 



PEROMYSCUS LEUCOPUS NOVEBORACENSIS (Fischer) 



Northern White-footed Mouse, or Deer Mouse 



Tliis nocturnal mouse is rarely found at any great distance from 

 timber or brush of some sort. Available records indicate that its 

 vertical range stops at about 3,000 feet. It ranges over most of the 

 western half of the State and is found also in the southeastern and 

 northeastern counties. 



