Pappogeomys tylorhinus (Merriam, 1895) . N. Am. Fauna, 8:167.

TYPE LOCALITY: Mexico, Hidalgo, Tula, 6,800 ft. (2,073 m) .

DISTRIBUTION: Distrito Federal and Hidalgo to C Jalisco (Mexico).

SYNONYMS: angustirostris Merriam, arvalis Hooper, atratus Russell, brevinasus Russell, planiceps Merriam, varius Goldman, zodius Russell.

COMMENTS: Subgenus Cratogeomys . Polytypic; subspecies reviewed by Russell (1968b).