8 NEW-YORK FAUNA. 



hairs. Body and inlerfemoral membrane above covered vv^ith hair, black at the base, then 

 hght yellowish, subsequently black, and finally tipped with white. From this results a gene- 

 ral grey or hoary appearance, which suggested the specific name. Towards the margin of 

 the interfemoral membrane, this hoary color passes into faint reddish. Humeral membrane 

 dusky, with a reddish tint near the shoulder. Beneath, a buff colored band or cravat sur- 

 rounds the neck ; the breast colored like the back, and passing into clay yellow on the abdo- 

 men and the anterior part of the interfemoral membrane. 



Totallength, 4-8. Thumbnail 0-4. 



Length of tail, 1-6. Tibia, 0-8. 



Forearm, 2'0. Spread, 15" 5. 



This is the largest species observed in this State. It appears to be less nocturnal than 

 many of the other species, and retires quite late to its winter quarters. On the 12th December 

 of this year, (1841,) I noticed two flying about quite actively shortly before noon. It is not 

 a common species. Its geographical range is very extensive. It was first discovered by 

 Nuttall, at Council Bluff on the Missouri ; subsequently seen in Georgia by Le Conte, and 

 since noticed in Pennsylvania and Massachusetts. It was found by Richardson as far north 

 as the fifty-fourth degree of latitude. Nothing is known of its habits. 



THE LITTLE BROWN BAT. 



Vespertilio sueulatus. 



PLATE in. FIG. 2. — (STATE COLLECTION.) 



Vespertilio mbtdatvs. Say, Long's Exped. Vol. % p. 65. 



Y. carolinensis, var. Harlan, Fauna Amer. p. 22. Godman, Am. Nat. Hist. Vol. 1, p. 71. 



V. dotnesliats. Geeen, Cab. Nat. Hist. Vol. 2, p. 290. 



V. lucifugus. Le Conte, McMurtrie's Cuvier, Vol. 1, p. 431. 



V. subulatus. Cooper, Ann. Lye. Nat. Hist. N. Y. Vol. 4, p. 61. . 



Say's Bat. Richardson, Fauna Bor. Am. Vol. 1, p. 3. 



Charactenstics. Small olive brown above ; greyish beneath. The fore-arm and tail sube- 

 qual. Tragus awl-shaped. 



Description. Head short and broad. Ears membranous, longer than broad, ovate ; poste- 

 rior margin broadly emarginate, somewhat narrowed at the tip. Within sparsely hairy ; more 

 densely so at the base, and ascending sparsely along the anterior margins, which are plaited. 

 Tragus linear, subulate, from 0'2-0"3 in length, ending in an obtuse tip. Interfemoral 

 membrane broad ; naked, including the tip of the tail. In dried specimens this tip appears 

 beyond llic membrane. Fur remarkably soft and silky, and the membranes very thin and 

 delicate. Dental formula : Incisors, f ; canines, | ; cheek teeth, || = 38. 



Color. In the neighborhood of the mouth and chin the hair is of a deep brown, approaching 

 to black. Beneath, the fur is deep brownish black at the base, and light yellowish at the 



