94 



NORTH AMERICAN FAUNA 66 



tends through November. A female may breed three or four times 

 yearly, and a litter may contain from two to nine young, although four 

 to six is the most common number. 



Specimens excmdned. — Prince Georges County: Patuxent Research 

 Center, 3. 



Peromyscus maniculatus nubiterrae Rhoads 



Peromyscus leucoyus nubiterrm Rhoads, Proc. Acad. Nat. Sci. Phila- 

 delphia, 48 : 187, April 1896. 



Type locality. — Summit of Roan Mountain, Mitchell County, North Carolina. 

 Altitude 6,370 feet. 



Generul distribution. — Allegheny and Blue Ridge Mountains and adjacent 

 ranges from western Pennsylvania and New York, south to western North Caro- 

 lina and northeastern Georgia. 



Distribution in Maryland. — Found in the Allegheny Mountain sec- 

 tion at elevations usually above 2,500 feet. 



Distinguishing characteristics. — Similar in coloration and size to 

 P. m. hairdii, but is readily distinguished from that subspecies by its 

 much longer tail, which is more than half the total length of the ani- 

 mal. Usually nubiterrae has larger ears and feet than bairdii. 



In general, nubiterrae can be distinguished from Peromyscus leuco- 

 yus by certain subtle differences in coloration. Some specimens of 

 nubiterrae.^ however, are confusingly similar to Peromyscus leucopus., 



FiGUSE 34. — Distribution of Peromyscus maniculatus nubiterrae and P. m. bairdii. 



