MILLER AND REHN : NORTH AMERICAN MAMMALS. 117 



1895. M\_icrotus\ pennsylvanicus RHOADS, Amer. nat., xxix, 

 p. 940. October, 1895. 



TYPE LOCALITY. Meadows below Philadelphia, Pennsylvania. 



Microtus pennsylvanicus nigrans Rhoads. 



1897. Microtus pennsylvanicus nigrans RHOADS, Proc. acad. 



nat. sci. Phila., p. 307. June 18, 1897. 



TYPE LOCALITY. Currituck, Currituck County, North Caro- 

 lina. 



Microtus pennsylvanicus acadicus Bangs. 



1897. Microtus pennsylvanicus acadicus BANGS, Amer. nat., 



xxxi, p. 239. March, 1897. 

 TYPE LOCALITY. Digby, Nova Scotia. 



Microtus pennsylvanicus modestus (Baird). 



1857. Arvicola modesta BAIRD, Mamm. N. Amer., p. 535. 

 1900. Microtus pennsylvanicus modestus BAILEY, North 



Amer. fauna, no. 17. June 6, 1900. 

 TYPE LOCALITY. Cochitopa (" Sawatch ") Pass, Saguache 



County, Colorado. 



Microtus pennsylvanicus f ontigenus (Bangs) . 



1896. Microtus font i genus BANGS, Proc. biol. soc. Washing- 

 ton, x, p. 48. March 9, 1896. 



1897. Microtus pennsylvanicus f ontigenus MILLER, Proc. 

 Boston soc. nat, hist., xxvni, p. 14. April 30, 1897. 



TYPE LOCALITY. Lake Edward, Quebec, Canada. 



Microtus pennsylvanicus labradorius Bailey. 



1898. Microtus pennsylvanicus labradorius BAILEY, Proc. 

 biol. soc. Washington, xii, p. 88. April 30, 1898. 



TYPE LOCALITY. Fort Chimo, Ungava, Labrador. 



Microtus drummondii (Audubon and Bachman) . 



1854. Arvicola drummondii AUDUBOX and BACHMAN, Quad. 

 N. Amer., in, p. 166. 



1894. Arvicola (N^ynomes) drummondi RHOADS, Proc. acad. 

 nat. sci. Phila., p. 287. October 23, 1894. 



1897. [Microtus~] drummondi TROUESSART, Catal. mamm., 

 pt. in, p. 563. 



TYPE LOCALITY. " Valleys of the Rocky Mountains " ; prob- 

 ably in the vicinity of Jasper House, Alberta, Canada. 



