140 PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
Genus PLATYGEOMYS Merriam.i 
1895. PIatif(feom;is Merria:m, North Anier. fauna, no. 8, p. 162. 
January 31, 1895. Type. — Geornus gt/nuntrus Merriam. 
Platygeomys gymnurus (Merriam). 
1892. Geomys <jymnurus Merriam, Proc. biol. soc. Wash¬ 
ington, VII, p. 166. September 29, 1892. 
1895. Platygeomys yymn^irus Merriam, North Amer. fauna, 
no. 8, p. 164. January 31, 1895. 
Type locality.— Zapotlan, State of Jalisco, Mexico. 
Platygeomys tylorhinus Merriam. 
1895. Platygeomys tylorJiinas Merriam, North Amer. fauna, 
no. 8, p. 167. Januaiy 31, 1895. 
Type locality.— Tula, State of Hidalgo, Mexico. 
Platygeomys planiceps ^Merriam. 
1895. Platygeomys planiceps Merriam, North Amer. fauna, 
no. 8, p. 168. January 31, 1895. 
Type locality.— North slojie Volcano of Toluca, State of 
Mexico, Mexico. 
Platygeomys fumosus (Merriam). 
1892. Geomys fumosus Merriam, Proc. biol. soc. Washing¬ 
ton, Yii, p. 165. September 29, 1892. 
1895. Platygeomys flunosus Merriam, North Amer. fauna, 
no. 8, p. 170. January 31, 1895. 
Type locality.— Colima Cit}^ State of Colima, Mexico. 
Genus ORTHOGEOMYS Merriam.^ 
1895. Orthogeornys Merriam, North Amer. fauna, no. 8, 
p. 172. January 31, 1895. Type. — Geomys scalops Thomas. 
’ Revised by Merriam, North Amer. fauna, no. 8, pp, 162-171. January 31,1895. 
2 Revised by Merriam, North Amer. fauna, no. 8, pp. 172-179. January 31, 1895. 
