_Heterogeomys hispidus concavus_ Nelson and Goldman, Proc.
Biol. Soc. Washington, 42:148, March 30, 1929. (Type from
Pinal de Amoles, Queretaro, Mexico.)
_Specimens examined_, 5 as follows: 70 km. [by highway] S
Ciudad Victoria and 5 km. W El Carrizo, 4; 70 km. [by
highway] S Ciudad Victoria and 2 km. W El Carrizo, 1.
_Remarks._--These gophers have been compared with specimens of _H. h.
hispidus_ from Veracruz (5 km. N Jalapa and 4 km. WNW Fortin) and with
specimens of _H. h. concavus_ from San Luis Potosi (Xilitla and
vicinity and 3 mi. NW Pujal); the latter were examined through the
courtesy of Dr. George H. Lowery, Jr., of the Museum of Zoology at
Louisiana State University. These five specimens are assigned to _H. h.
concavus_ and resemble in every way this subspecies except: slightly
smaller, somewhat darker, and skull with lambdoidal crest less inclined
forward. In the latter feature, the single skull available seems to
resemble most closely that of _H. h. hispidus_. Unfortunately, all but
one skull, that of a subadult female, were destroyed in the field.
This is the first known record of this genus in Tamaulipas and the most
northern locality from which specimens have been taken. At this
latitude, the gopher appears to be restricted to the humid belt on the
east face of the Sierra Madre Oriental. These large gophers were
difficult to trap by ordinary means; Schaldach got two by using
large-sized Macabee traps but the others were taken at night either
with the aid of a dog or by natives with slingshots.
~Liomys irroratus texensis~ Merriam