96 NEW YORK STATE MUSEUM 



Reithrodontomys lecontii impiger Bangs Virginia harvest mouse 



1898 Eeitliro don tomy s lecontii iiupiger Bangs, Proc. biolog. soc. 

 Washington. 10 Aug. 1898. 12:167. (White Sulphur Springs, W. A'a.) 

 Eusset Ircnvn above, dull white beneath. Total length, 115 (4+); tail ver- 

 tebrae, 51 (2) ; hind foot 9 (I), (impiger; Lat., quick) 



The little known Virginia harvest mouse has been taken at White 

 Sulphur Springs W. Va. only. It probably occurs throughout the 

 southern part of the upper austral zone, east of the high AUeghanies. 



Genus Oryzomys Baird 



1857 Oryzomys Baird, Mamm. N. Am. p. 458. Type Mus palu.stris 

 Harlan. 



Front teeth without grooves; cheek tetfh with tubercles arranged in two 

 rows; sliuU distinctly ridgeS over eye socJcets ; form slender; total length more 

 than 230 (9) ; tail long, scant haired ; belly not white. (Oryzomys; Gk.,riee 

 mouse) 



The genus Oryzomys is widely distributed in the warmer parts of 

 America. Many species are known, only one of which reaches the 

 upper austral zone of the eastern United States. 



Oryzomys palustris (Harlan) J?iee field mouse 

 1837 Mus palustris Harlan, American jour. sci. 31 : 386. (Fast island,. 



near Salem N. J.) 

 18.')7 Oryzomys palustris Baird, Mamm. W. Am. p. 459. 



Dark brown above, paler below. Total length, 240 (9i) ; tail vertebrae, 115 

 (4^) ; hind foot, 30 (l5|.) (palustris; Lat., pertaining to a marsh) 



The ricefield mouse is locally common in marshes throughout the 

 austral zones of the eastern United States, north to New Jersey. The 

 form which occurs within our limits is the typical subspecies, 

 O- palustris palustris. Two others are found in Florida and a 

 fourth in Texas. 



Genus Peromyscus Gloger 



1842 P e r m y s e u s Gloger, Gemoinn, Haud-u. hiifsbuch der naturgesch. 



p. 95. Type Peromyscus arborens Gloger=C ricotus myoides 



Gapper=M us sylvatious noveboracensis Fischer. 



Front teeth without grooves, cheek teeth in upper jaw with tubercles arranged 



in two longitudinal rows; si tiV smootJily rounded ietucen eye sockets ; form slender. 



Total length, (in our species) under 220 (8i) ; tail long, well furred, belly white, 



(Peromyscus; Gk., little pocket mouse) 



The genus Peromyscus, which contains nearly loo species, is 

 confined to America. It reaches its greatest development in Mexico and 

 the western United States. Three species occur vcithin our limits, all 

 members of the subgenus Peromyscus. 



