110 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



Genus XENOMYS Merriam. 



1892. Xenomys MERRIAM, Proc. biol. soc. Washington, vii, p. 

 160. September 29, 1892. Type. Xenomys nelsoni MERRIAM. 



Xenomys nelsoni Merriam. 



1892. Xenomys nelsoni MERRIAM, Proc. biol. soc. Washing- 

 ton, vii, p. 161. September 29, 1892. 



TYPE LOCALITY. Hacienda Magdalena, between the City of 

 Colima and Manzanillo, State of Colima, Mexico. 



Genus NEOTOMODON Merriam. 



1898. Neotomodon MERRIAM, Proc. biol. soc. Washington, xii, 

 p. 127. April 30, 1898. Type. Neotomodon alstoni MERRIAM. 



Neotomodon alstoni Merriam. 



1898. Neotomodon alstoni MERRIAM, Proc. biol. soc. Wash- 

 ington, xii, p. 128. April 30, 1898. 



TYPE LOCALITY. Nahuatzin, State of Michoacan, Mexico. 

 Altitude, 8500 feet. 



Neotomodon orizabae Merriam. 



1898. Neotomodon orizabae MERRIAM, Proc. biol. soc. Wash- 

 ington, xii, p. 129. April 30, 1898. 



TYPE LOCALITY. Mount Orizaba, State of Puebla, Mexico. 

 Altitude, 9500 feet. 



Neotomodon perotensis Merriam. 



1898. Neotomodon perotensis MERRIAM, Proc. biol. soc. Wash- 

 ington, xn, p. 129. April 30, 1898. 



TYPE LOCALITY. Cofre de Perote, State of Yera Cruz, Mex- 

 ico. Altitude, 9500 feet. 



