MAMMALS OF MARYLAND 



51 



Figure 19. — Distribution of Pipistrellus subflavus suT)flavus. 



Keedysville, Snively's Cave No. 1 (bat banding record, U.S. Fish and 

 Wildlife Service) ; Round Top Mountain (bat banding record, U.S. 

 Fish and Wildlife Service) . 



Remarks. — Two subspecies of Pipistrellus subflavm have been named 

 from the eastern United States, P. s. subflavus^ the typical form as 

 described above, and P. s. ohscurtcs Miller (Type locality : Lake George, 

 Warren County, New York). Miller (1897, p. 93) described ohscurus 

 as differing from subflavus only in coloration, being somewhat darker, 

 duller, and more yellowish. Several specimens from the vicinity of 

 Washington, D.C., in the national collections, are darker than typical 

 P. s. subflavus and were referred by Bailey (1923, p. 136) and Gardner 

 (1950b, p. 112) to obscurus. Bailey (1923, p. 137) says that "They may 

 have migrated from their northern habitat, or merely wandered out of 

 their regular range after the breeding season was over." As pointed 

 out by W. H. Davis (1959, p. 523) , who has synonomyzed P. s. obscurus 

 with P. s. subflavus, there is a wide range of individual variation in 

 color in this species, and dark specimens are found throughout the 

 entire range of P. s. subflavus. The dark specimens from the vicinity 

 of Washington, referred to obscurus by both Bailey and Gardner, fall 

 within the range of individual variation of color in the subspecies 

 subflavus. 



Another Maryland specimen which exhibits atypical coloration is 

 from St. George Island, St. Marys County. It is similar to P. s. florid- 



