20 BULLETIN 144, UNITED STATES NATIONAL MUSEUM 



Exiguus {V espertilio) H, Allen, Proc. Acad. Nat. Sci. Philadelphia^ 

 1866, p. 281. The description of this bat leaves little doubt that it is 

 identical with M. nigricans (described as V espertilio ooncinnus on 

 the previous page). The type specimen was from Aspinwall, now 

 Colon, Panama. 



Exilis {V espertilio) H. Allen, Proc. Acad. Nat. Sci. Philadelphia^ 

 1866, p. 283. This is a synonym of Myotis calif ornicus. The type 

 came from Cape St. Lucas, Lower California. 



Ferrugineus iy espertilio) Temminck, Monogr. de Mamm., vol. 2, p. 

 239, 1840. Trouessart in his Catal. Mamm. viv. foss., suppl., 1904,, 

 p. 90, includes this as a valid species of Myotis^ following Dobson. 

 The original description, based on specimens in alcohol from Suri- 

 nam, states that there were-* teeth posterior to the canine, which 

 indicates probably an Eptesicus. Moreover, the name VespertUio 

 ferinigimeus is preoccupied by the V. fernjigineus of C. L. Brehm, 

 1827, which is a synonym apparently of some European species of 

 Nyctalus. It therefore requires no further consideration here. 



Gayi {VespertUio) Lataste, Actes Soc. Sci. Chile, Santiago, vol. 1 

 (1891), p. 81, 1892. The specimen figured and described by Gervais 

 in Gay's Historia de Chile, ZooL, vol. 1, p. 42, 1847, as VespertUio 

 chiloensis was slightly unusual in having the posterior minute pre- 

 molar of the upper jaw crowded into the angle behind the front 

 corner of the large third premolar. For this reason Lataste believed 

 it to be a distinct species and named it VespertUio gayi. Gervais 

 mentions that it is often taken in the houses at Valdivia, Chile. 

 The name is a synonym of Myotis chiloensis chiloensis. 



Griisescens {Myotis) Howell, Proc. Biol, Soc. Washington, vol. 32, 

 p. 46, March 10, 1909. This is the name of a large gray Myotis of 

 the southeastern United States, distinguished among American 

 species by the fact that the wing arises from the tarsus rather than 

 from the base of the toes. 



Gryphus {VespertUio) F. Cuvier, Nouv. Ann. Mus. d'Hist. Nat. 

 Paris, vol. 1, p. 15, 1832. Although Cuvier's description offers very 

 little that is diagnostic, it is likely that this name is a synonym 

 of Myotis lucifugus. That the animal was a member of the genus 

 Myotis is rendered probable by the lancet-shaped tragus and the two 

 minute premolars in each jaAv (in addition of course to the larger 

 third premolar) ; the size and color apply fairly well also. The 

 specimen came from near New York. 



Henshawii {VespertUio nitidus) H. Allen, Bull. U. S. Nat. Mus., 

 No. 43 (1893), p. 103, March 14, 1894. This name was proposed in 

 a tentative way for two specimens collected by H. W. Henshaw near 

 Wingate, N. Mex., in 1872 (entered together under the number 

 12450 (U. S. Nat. Mus.). These, though referred to "F. nitidus cilio- 



