1832. _V[espertilio]. subflavus_ F. Cuvier, Nouv. Ann. Mus.
Hist. Nat. Paris, 1:17, type locality restricted to 3 mi. SW
Riceboro, Liberty Co., Georgia, by W. H. Davis, Jour. Mamm.,
40:522, November 20, 1959.
1897. _Pipistrellus subflavus_, Miller, N. Amer. Fauna,
13:90, October 16.
_Distribution in Tamaulipas._--Presently known only from
three localities, but probably occurs in most of eastern
part of state.
Specimens examined are intermediate in color and measurements between
_Pipistrellus subflavus subflavus_ and _P. s. veraecrucis_, but the
color resembles that of individuals of _subflavus_ from Kansas more
than that of specimens of _veraecrucis_ from Las Vigas, Veracruz.
The two males from eight kilometers west and 10 kilometers north of El
Encino represent the southernmost record of the subspecies.
_Measurements._--External measurements of two males (58849,
58848) from 8 km. west and 10 km. north of El Encino and a
male (60296) from Rancho Pano Ayuctle are, respectively, as
follows: 78, 81, 83; 36, 38, 36; 10, 10, 9; 11, 11, 11;
length of forearm, 33.1, 32.0, --; length of tibia, 14.6,
13.4, 13.0. Some cranial measurements of the two specimens
from northwest of El Encino are: greatest length of skull,
12.8, 12.9; breadth of braincase, 6.5, 6.5; length of
maxillary tooth-row, 4.0, 4.1.
_Records of occurrence._--Specimens examined, 3: 8 km. W, 10
km. N El Encino, 400 ft., 2; Rancho Pano Ayuctle, 6 mi. N
Gomez Farias, 300 ft., 1.
Additional record: Matamoros (H. Allen, 1894:128).
=Pipistrellus hesperus potosinus= Dalquest