1848. _Dysopes aurispinosus_ Peale, U. S. Expl. Exp., 8:21,
type taken on board the U. S. S. Peacock at sea,
approximately 100 mi. S Cape San Roque, Brazil.
1931. _Tadarida aurispinosa_, Shamel, Proc. U. S. Nat. Mus.,
78:11, May 6.
_Distribution in Tamaulipas._--Known only from Cueva del
Abra, six miles north-northeast of Antiguo Morelos.
Carter and Davis (1961) recorded for the first time this species from
North America, on the basis of five specimens collected at Cueva del
Abra. From the same locality P. L. Clifton collected several owl
pellets which provide, besides many skulls of _Tadarida laticaudata_,
four crania of _T. aurispinosa_. Available measurements of three, of
the four _T. aurispinosa_, resemble those given by Carter and Davis
(_op. cit._) for their specimens. Measurements of the fourth cranium
are smaller (greatest length of skull, 19.4; zygomatic breadth, 11.1;
interorbital constriction, 3.7; cranial breadth, 9.1; mastoid breadth,
10.7; basal length, 16.3; length of maxillary tooth-row, 7.4; breadth
across M3, 7.9), but not outside the expected range of individual
variation if we can judge by the range recorded by Jones and Alvarez
(1962) for the related _Tadarida laticaudata_.
_Records of occurrence._--Specimens examined, 4, from [Cueva
del Abra], 6 mi. (by road) NNE Antiguo Morelos.
=Tadarida laticaudata ferruginea= Goodwin