1844. _Choeronycteris mexicana_ Tschudi, Untersuchungen ueber
die fauna Peruana ..., p. 72, type from Mexico.
_Distribution in Tamaulipas._--East side of Sierra Madre in
southwestern part of state.
Specimens from La Mula were obtained in a small cave, which was
inhabited also by _Desmodus rotundus_ and _Tadarida brasiliensis_. The
specimens from Miquihuana were captured in a mine by a native. Those
from four kilometers north of Joya Verde also were taken from a mine.
Females obtained in August at La Mula were lactating.
Specimens examined are indistinguishable from _C. mexicana_ from Oaxaca
and Jalisco. Baker (1956:172) found no differences between Coahuilan
and Tamaulipan specimens. Most Tamaulipan specimens are dark grayish,
but some are brownish and some are intermediate between the two colors
mentioned. Fourteen adults weighed an average of 16.0 (12-18) grams.
_Records of occurrence._--Specimens examined, 19: 4 km. N
Joya Verde, 4000 ft., 3; La Mula, 13 mi. N Jaumave, 4; Cueva
La Mula, 10 km. W Joya Verde, 2400 ft., 2; Miquihuana, 6500
ft., 10.
=Mormoops megalophylla megalophylla= (Peters)