1902. _Chilonycteris mexicana_ Miller, Proc. Acad. Nat. Sci.
Philadelphia, 54:401, September 12, type from San Blas,
Nayarit.
_Distribution in Tamaulipas._--Southern part of state in
areas of tropical forest.
Most individuals of this species were taken in mist nets. Northwest of
El Encino for example, bats were collected from a net placed in "a
strategic position across a narrow opening" (Schaldach, fieldnotes) in
a cave near the headwaters of the Rio Sabinas; along the same river at
Rancho Pano Ayuctle some were taken in a net stretched across a little
creek (arroyo). In the cave near El Encino the collector (Schaldach)
estimated the population of _P. rubiginosus_ at between two and three
hundred; at Ojo de Agua this bat was found in the deepest part of a
cave in association with _Myotis nigricans_.
Two June-taken females from the Sierra de Tamaulipas were lactating,
and weighed 17 and 18 grams.
The generic name _Pteronotus_ is employed instead of _Chilonycteris_
following Burt and Stirton (1961:24-25). The specific name
_rubiginosus_ is used in accordance with de la Torre (1955:696).
Tamaulipan specimens are assigned to _P. r. mexicana_ because they do
not differ from specimens of that subspecies from Nayarit, except that
the coloration of Tamaulipan specimens averages slightly darker in both
color phases.
Specimens of this subspecies from the Sierra de Tamaulipas, previously
recorded by Anderson (1956:349), are the northernmost reported in
eastern Mexico.
_Records of occurrence._--Specimens examined, 31: Sierra de
Tamaulipas, 2 mi. S, 10 mi. W Piedra, 1200 ft., 1; Sierra de
Tamaulipas, 3 mi. S, 10 mi. W Piedra, 1400 ft., 3; Rancho
Pano Ayuctle, 25 mi. N El Mante, 3 mi. W Pan-American
Highway, 300 ft., 3; Ojo de Agua, 20 mi. N El Mante, and 3
km. W Pan-American Highway, 300 ft., 2; 10 km. N, 8 km. W El
Encino, 400 ft., 22.
Additional records (Goodwin, 1954:4): Aserradero del
Paraiso; El Pachon.
=Pteronotus davyi fulvus= (Thomas)