16 BULLETIN 144, UNITED STATES NATIONAL MUSEUM 



douzieme " of Azara's Essais sur 1' Histoire Naturelle du Paraguay, 

 1801, was the first to be applied to the species which now bears the 

 name Myotis albescens. 



Albicinctus {Myotis) G. M. Allen, Journ. Mamm., vol. 1, p. 2, 

 November 28, 1919. This name proves to be a synonym of Myotis 

 lucifugus cmissimn\ the pale subspecies of M. lucifugus from the 

 semiarid parts of the western United States. 



Altifrons [Myotis) Hollister, Smithsonian Misc. Coll., vol. 56, No. 

 26, p. 3, December 5, 1911. The type specimen is from Henry House, 

 Alberta. It is not distinguishable from other examples of the dark 

 M. volans longici^us. 



Altipetens {Myotis yunumensis) H. W. Grinnell, Univ. California 

 Publ. Zool., vol. 17, p. 9, August 23, 1916. At first described as a 

 race of Myotis yuniaiiensis, the animal was later correctly recognized 

 by its describer as a pale form of M. lucifugus (Univ. California 

 Publ. Zool., vol. 17, p. 263, January 31, 1918). The name is antedated 

 by Myotis carissima Thomas, 1904. 



Amotus {Myotis longicrus) Miller, Proc. Biol. Soc. Washington, 

 vol. 27, p. 212, October 31, 1914. The tenable name for the Mexican 

 subspecies of Myotis volans ; type from Cofre de Perote, Vera Cruz. 



Arsinoe {Vespertilio) Temminck, Monogr. de Mamm., vol. 2, p. 247, 

 1840. The specimen which formed the basis for this name came from 

 Surinam, and was said by Dobson (1878) to be in the Leiden 

 Museum. The six cheek teeth in each jaw indicate that it was a 

 Myotis, while the description as a whole applies to the Vespertilio 

 albescens of GeofFroy, 1805, 



Atacamensis {Vespertilio) Lataste, Actes Soc. Sci. Chile, Santiago, 

 vol. 1, p. 79, 1892. This is the tenable name for the small gray- 

 haired race of Myotis chiloensis occurring in the arid western coast 

 region of South America. Lataste briefly pointed out some of the 

 more important characters. He attributes the name to Philippi, who 

 had so labeled the specimens in the Santiago Museum. Philippi's 

 description and plate did not appear until 1896, however, hence the 

 authorship of the name must date from Lataste on the basis of his 

 short diagnosis. 



Austroriparius {Vespertilio lucifugus) Rhoads, Proc. Acad. Nat. Sci. 

 Philadelphia, p. 157, May 22, 1897. Misled by the immaturity of the 

 type specimen, Miller (1897) placed this name in the synonymy of 

 Myotis lucifugus lucifugus. Additional material shows that the 

 animal is a distinct species, known at present from the vicinity of 

 Tarpon Springs, Fla. (the type locality), and from Mitchell, 

 Indiana. A specimen in the British Museum, collected by Drum- 

 mond, is labeled " North America." It may have come from the 

 interior of Canada. 



