A MONOGRAPH OF THE BATS OF NORTH AMERICA. 189 



This species Avas collected by M. Leseuer, who sent it from New York, under the 

 name which I have retained. 



5. ('. /jeorgianus. — The head is like that of the Miirinoid i^roiip of bats. The ear is 

 eiuarginate, and the traj^ns is subulate. All the superior i»arts of the body are 

 colored by a mixture of black and whitish yellow ; the black mostly, inasmuch as 

 the points of the hair are whitish, the remainder being black. The inferior parts 

 ai'e gray, but mixed with black from the same cause which colors the superior por- 

 tions. Mustaches are present on the sides of the upper lips and upon the lower jaw. 



Length of body, from-tip of nose to base of tail, 1 inch, G lines; length of tail, 1 

 inch 2 lines; expanse of wing membrances, 7 inches 2 lines. 

 Ilab. — Georgia. (Maj. Lecoute.) 



6. r. subHavus. — The head is like that of the Murinoid group of bats. The ear is 

 emarginated, the tragus is half heart-shaped. The inferior parts of the body are of 

 a clear whitish-gray, sliglitly waved with brown; the superior parts are of a white 

 yellow ; the hairs of the superior ])arts are black at their base, Avhitish through the 

 greater part of their length, and brownish at their tijis; that of the inferior parts 

 are black at their basal portions, and of a whitish yellow at their outer. Mustaches 

 are present on the sides of the upper lip and beneath upon the lower jaw. 



Length of body, from tip of nose to the base of the tail, 1 inch 6 lines; length of 

 the tail, 1 iucli 3 lines; expanse of Aviug membranes, 7 inches 2 lines. 

 Hab. — Georgia. (Maj. Lecoute.) 



H. 



Audubon and Baciiman.— Journal, Academy of ISTatural Science Pliil- 

 adelphia, 1842, 280. 



Fes2)er<i7io?ftOH<fco?a (Mountain bat). — V. vespertilione subulata brevior; auriculus 

 brevioribus ; tragus nonexcedeutibus, dimidiam longitudinem auricuhe ; colore ful vo. 



Moimtahi Bat. — Smaller than Say's Bat ( U. snbulatns); ears shorter; tragus, less 

 than half the length of the ear; color, yellowish brown. Upper fore teeth bilobate, 

 ears moderate, naked, erect, rather broad at base; tragus linear, subulate, body 

 small; wings long; tail projecting a line beyond the interfemoral membrane, which 

 is slightly sprinkled with hair above and beneath. 



Color. — The nose and chiu are black ; ears light brown ; wing membranes dark 

 brown. The whole of the fur of the body, above and beneath, is from the roots, of 

 an uniform yellowish-brown color. 



The species diti'ers from Say's Bat, not only in color, but in the much shorter ears 



and tragus. The size and shape of the tragus wo have found an invaluabh! guid(^ in 



our American bats; the ears of the present species, when alive, are always erect; 



whilst those of Say's Bat are folded backwards like those of the long-eared Bats — 



Plecotus. 



9 2 1 1 



Dentition. — Incisors Canines , 



6 1 — 1 



Dimensions. — Length of head and body, 1 inch 8 lines; length of tail, 1 incli (j lines; 

 length of spread, 8 inches; height of ear posteriorly, 3 lines; height of tragus, l^^ 

 Iin«!s. 



N. B.— The tragus in Say's Bat is four-and-a-half lines in height. Several speci- 

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

 the Grey Sulphur Springs. They were uniform in size and color. 



Fesperlilio virginianus (Virginian bat). — V. A'espertiliono monticola paululum 

 longior, auriculus paululum hjugioribus magisquo acutis; deniibus primoribus 

 maxilho superioris simplicibus; interfemorali membrana uuda; corpore supra fuli- 

 gineo-fusco; subtus cinereo-fuscato. 



J'irginian bat. — X little larger th;in the Mountain Bat; cars a little longer and more 

 pointed; npi)er fore teeth simple; interfemoral membrane naked; sooty brown above, 

 ash brown beneath. 



