October, 1841.] 93 



Length of head and body, 1 inch 8 lines. 

 " tail, 1 " 6 " 



" spread, 8 inches " 



Height of ear, posteriorly, 3 " 



" tragus 2 " 



N. B. The tragus in Say's Bat is 4| lines in height. Several specimens 

 of this Bat were obtained during summer, on the mountains of Virginia, at 

 the Grey Sulphur Springs. They were very uniform in size and colour. 



Vespertilio Virginianus. Virginian Bat. 



V. (Virginianus) vespertilione monticula paululum longior, auriculis 

 paululum loncjioribus magisque acutis ; dentibus primoribus maxillae supe- 

 rioris simplicibus ; interfemorali membrana nuda; corpore supra fuligineo- 

 fusco ; subtus cinereo fuscato. 



Virginian Bat. A little larger than the Mountain Bat ; ears a little longer 

 and more pointed ; upper fore teeth simple ; interfemoral membrane naked ; 

 sooty, brown above, ash brown beneath. 



Dental formula, incisors, ^ ^ Canines, * * 



6 11. 



In size, this species is intermediate between Vespertilio Carolinensis, and 

 V. subulatus. The ear is naked, less rounded, and more pointed than either 

 of the other closely-allied species. The tragus is very narrow, linear, and 

 less than half the length of the ear. The tail is enclosed in the interfemoral 

 membrane, except the penultimate joint, which is free. The anterior upper 

 fore teeth, instead of being sub-simple, as in the (V. Carolinensis) or bilo- 

 bate, as in Ves. subulatus and Ves. montanus, are simple. 



Colour. The nose, upper lip and under-jaw are black; wings dark 

 brown. The back is sooty brown ; on each shoulder, at the insertion of 

 the wing, there is a circular black spot about four lines in diameter; on 

 the under surface, cinereous brown. 



Dimensions 



Length of head and body, 2 inch. 5 lines. 



Do. tail, 1 " " 



Spread, 8 " 8 " 



Height of ear, posteriorly, 4 " 



Do. tragus, If " 



Habitat. Mountains of Virginia. 



Remarks. Say's Bat (Ves. subulatus) has been several times described. 

 It was first observed by Say, at the head waters of the Arkansas, within 

 sight of the Rocky Mountains. It was subsequently described by Richard- 

 son, who obtained it at the Saskatchewan It was given by Le Conte, in 

 McMurtrie's translation of Cuvier, under the name of Ves. Lucifugus. Pro- 

 fessor Green, in Doughty's Cabinet of Natural History, (vol. 2, fig. 270,) 

 gave a correct description of it under the name of Ves. domesticus. He, 

 however, erred in arranging it in the preface of his descriptions, under 

 Rafinesque's genus Nycticejus, to which it does not belong. The last notice 

 of it is found in Cooper's Monograph of Vespertilio, in the New York Lyceum 

 of Natural History. This species has a very extensive range. We obtained 

 it in the widely separated localities of Carolina and Labrador, during sum- 

 mer. The Ves. Carolinensis is found in autumn, winter and spring, in 

 Carolina; but appears to migrate northwardly in summer, and is at that 

 season common in the State of New York. The Ves. monticola and Ves. 

 Virginianus have not been met in Carolina or Georgia, and appear to be 

 Northern or Alpine species, and no doubt exist in the Northern States. The 

 Ves. Carolinensis may be easily distinguished from the other closely-allied 

 species, by the large size of the first upper incisor; the second which suc- 

 ceeds it being so minute as to require the aid of a good magnifier to detect it. 



The genera of Bats have within the last few years been greatly multiplied, 

 in order to include the vast number of new species which have been accu- 



