_Diagnosis._--"... color duller and less yellow, and dark tips of shorter hairs on back more conspicuous" than in _P. subflavus subflavus_ according to the original description. _Remarks._--No one, as far as we know, has carefully studied the variation in _Pipistrellus subflavus_ of the United States and Canada since Miller named _P. s. obscurus_. With the more abundant material now available, such an appraisal would be worth-while. The occurrences cited above for Minnesota and Wisconsin were recorded in the literature under the specific name without indication of subspecific affinity. The reference of specimens from these states to the subspecies _P. s. obscurus_ is an arbitrary assignment on our part; we have not seen them. However, two specimens in the University of Kansas Museum of Natural History from Potosi (Snake Cave) Grant County, Wisconsin, are referable to _P. s. obscurus_. These provide the southwesternmost record station of occurrence in Wisconsin but are not shown on the distribution map because the specimens were received after figure 1 was prepared. It is noteworthy that the species _Pipistrellus subflavus_ has not yet, as far as we can ascertain, been recorded from Michigan, northern Indiana, northern Illinois, or Iowa. Probably the species occurs in these areas. +Pipistrellus subflavus veracrucis+ (Ward) _Vesperugo veracrucis_ Ward, Amer. Nat., 25:745, August, 1891. _Pipistrellus veracrucis_ Miller, N. Amer. Fauna, 13:93, October 16, 1897. _Type locality._--Las Vigas, 8,500 ft., Veracruz. _Range._--Eastern Mexico, certainly from the type locality southward into Honduras. Records of occurrence are: _Veracruz_: Las Vigas (13 specimens from 4 km. E Las Vigas, 8,500 ft., K. U.); 30 km. SSE Jesus Carranza, 1 (K. U.). _Honduras_: Jilamo Farm, Tela District, 3 (Univ. Michigan). _Diagnosis._--Size small for the species; measurements of 13 near topotypes are: total length, 78(73-85); tibia, 12.9(11.8-14.7); forearm, 31.8(29.5-33.1); greatest length of skull (exclusive of incisors), 12.2(11.8-12.6); breadth of braincase immediately above roots of zygomatic arches, 6.3(6.0-6.7). Color darker than Mummy Brown above and below.