As may be readily seen by comparing specimens of _L. borealis_ and _L. cinereus_ from Mexico (or also from any place in North America north of Mexico), the description by Saussure applies to the hoary bat (_Lasiurus cinereus_) and not to the red bat (_Lasiurus borealis_).
Accordingly, the name _A[talapha]. mexicana_ Saussure 1861 falls as a synonym of _Lasiurus cinereus cinereus_ (Beauvois 1796); if the hoary bat of the southern end of the Mexican table land should prove to be subspecifically separable, the name _Lasiurus cinereus mexicanus_ would be available for it.
The Mexican red bat, thus, is left without a name, and for it I propose
_Type._--Skin (8492 U.S. Nat. Mus.), and corresponding skull (37578 U.S. Nat. Mus.), sex not recorded on the label; Penuela, Veracruz; 20 February 1866; obtained by F. Sumichrast.
_Range._--Approximately the southern two-fifths of Mexico; exact limits of range unknown.
_Diagnosis._--Resembles _Lasiurus borealis teliotis_ (H. Allen) but feet, interfemoral membrane, and under side of wings much less hairy.
_Comparisons._--From _L. b. teliotis_, which occurs to the northwest, _L. b. ornatus_ differs in the restricted peripheral distribution of the fur (see Miller, N. Amer. Fauna, 13:112, October 16, 1897). From _Lasiurus borealis frantzii_ (Peters), which occurs to the southward, _L. b. ornatus_ differs in longer forearm (41 _versus_ 37); upper parts lighter rufescent or chestnut, the back being only lightly overlaid with this color; underparts washed with lighter buff, the basal tone plumbeous, instead of blackish; skull larger (see Goldman, Proc. Biol. Soc. Washington, 45:148, September 9, 1932).
End of the Project Gutenberg EBook of A New Name for the Mexican Red Bat, by E. Raymond Hall