YESPERTILIO. 51 



Vespertilio siibiilatus, Say. 



The Little Brown Bat. 

 Fig. 45. Fig. 46. 



Vespertilio subulatus, Sat, Long's Exp. to Rk'y Mts. II, 1823, 65 (note). — 



Haklan, Fauna Americana, 1825, 22. — Richardson, Fauna Bor. Amer. 



I, 1829, 3.— GoDMAN, Amer. Nat. Hist. 1, 1831, 71.— Cooper, Ann. Lye. 



N. Y. IV, 1837, 61. — DeKay, Nat. Hist. N. Y. (Zool.) 1842, 8. — 



Wagner, Schreb. V, 1855, 750. — Leconte, Proc. Acad. Nat. Sci. Phila. 



1855, 436. 

 Vespertilio califomicns, Bachmax, Journ. Phila. Acad. Nat. Sci. 1842, 280. 



— Peale, U. S. Explor. Exp. (Mam.) 1858, 3. 

 Vespertilio caroli, Temm. Monog. II, 1835, 237. — Wagner, Schreb. Saiig. V, 



1855, 749. 

 Vespertilio domesticus, Green, Cab. Nat. Hist. II, 290. 



Description. — Head light, moderate size; face whiskered; 

 ear smaller than in V. evotis, turned slightly outwards ; tragus 

 erect, half the height of the ear ; the interfemoral membrane 

 smallest, the point of tail exserted. 



The fur is not so thick as in V. evotis. The base of the hair 

 behind is of a dark plumbeous color, tips olive-brown ; the base 

 in front is of the same hue, blending into a whitish-yellow tip. 

 The color is subject to little variation ; the olive-brown of the 

 back is, in some specimens, of a lighter hue. The distribution 

 as in other species. 



Dentition as in V. evotis. 



The specimens of V. subulatus arrange themselves into two 

 groups, one of which may be considered typical, the other tending 

 in the shape of ear to the preceding species. Indeed the change 

 from one species to the other is so gradual that it is difficult to 

 assign the boundary to each. I have included under V. subulatus 

 a number of specimens which have the ear higher than those from 



