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Map illustrating approximate distribution of Pine Mice belonging to the subgenus Pitymys. 
Microtus pinetorum (LEConTE). (Ann. Lyc. Nat. Hist. N. Y., III, 1830, p. 133.) 
Type locality — Pine forests of Georgia. General color cinnamon or russet 
brown; belly dusky, more or less tinged with russet brown; tail short; ears 
very small. Total length, about 4.50 inches; tail vertebre, .70 inch. 
Microtus p. scalopsoides (AupD. & Bacu.). (Proc. Acad. Nat. Sci. Phila., I, 1841, p. 
97.) Type locality—Long Island, New York. Larger and darker than pine- 
torum. Description as previously given. 
Microtus p. auricularis BAILEY. (Proc. Biol. Soc. Wash., XII, 1898, p. 90.) Type 
locality — Washington, Adams Co., Mississippi. About equal in size to pine- 
torum, but color approaching scalopsoides; fur thick and dense. 
Microtus nemoralis (BAILEY). (Proc. Biol. Soc. Wash., XII, 1898, p. 89.) Type 
locality — Stilwell (Boston Mountains), Indian Territory. Largest of the 
subgenus and coloration somewhat lighter than scalopsoides. 
