30() PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
Ferognathus latirostris Rhoads. 
1894. Perognathus latirostris Rhoads, Amer. nat., xxviii, p. 
185. February, 1894. 
Type locality. — Rocky Mountains.’’ 
Regarded by Osgood (North Amer. fauna, no. 18, p. 44, Septem- 
ber|20, 1900) as identical with P. hispidus paradoxus (p. 160). 
Perognathus conditi Allen. 
1894. Perognathus conditi Allen, Bull. Amer. mus. nat. 
hist., VI, p. 318. November 7, 1894. 
Type locality. — San Bernardino Ranch, Cochise County, 
Arizona. 
Regarded by Osgood (North Amer. fauna, no. 18, p. 44, Septem¬ 
ber 20, 1900) as identical with P. hispidus paradoxus (p. 160). 
Ferognathus obscurus Merriam. 
1889. Perognathus obscurxis Merriam, North Amer. fauna, 
no. 1, p. 20. October 25, 1889. 
Type locality. — Camp Apache, Grant County, New Mexico. 
Regarded by Osgood (North Amer. fauna, no. 18, p. 52, Septem¬ 
ber 20, 1900) as identical with P. intermedius (p. 162). 
Ferognathus armatus Merriam. 
1889. Perognathus armatus Merriam, North Amer. fauna, 
no. 1, p. 27. October 25, 1889. 
Type locality. — Mount Diablo, central California. 
Regarded by Osgood (North Amer. fauna, no. 18, p. 58, Septem¬ 
ber J20, 1900) as identical with P. californicus (p. 163). 
Zapus hudsonius hardyi Batchelder. 
1899. Zapus hudsonius hardyi Batchelder, Proc. New 
England zool. club, i, p. 5. 
Type locality. — Mount Desert Island, Hancock County, 
Maine. 
Regarded by Preble (North Amer. fauna, no. 15, pp. 10, 15, 
August 8, 1899) as identical with Z. hudsonius (p. 166). 
Zapus imperator Elliot. 
1899. Zapus imperator Elliot, Field Columbian mus., publi¬ 
cation 30, zool. ser., i, p. 228. February 1, 1899. 
Type locality.— Sieg’s Ranch, Elwah River, Clallam County, 
' Washington. 
