APPENDIX. 75 



the side and crescentic — separated by a groove. Ears ovoid, mucli higher 

 than tlie summit of the liead, tlie posterior border vertical, and slightly 

 emarginated at the tip ; tragus long, lanceolate, but a little roanded 

 near the tip ; the auricle is hairy at the base of the external part ; the 

 thumb stout, armed by a very curved nail ; tail long, point free ; inter- 

 femoral membrane marked beneath with parallel lines ; claws of feet very 

 long, stout, and curved. Incisor teeth above in two close pairs ; below 6, 

 trilobed. Molars above 4, without false ; inferior with 5, one being a small 

 false molar. 



Fur long, soft and shining ; above of a brown umber hue, the inferior 

 parts more clear. All the fur is gray at the base. Membranes and ear 

 black. 



Length, 3 in. 11 lines — the tail taking IJ inches; length of ear, 4} 

 lines ; expanse of wing membrane, 10 in. 9 lines. 



Hab. Found by Prince Max upon the banks of Missouri River. 



V. carolinensis. — Not so large as V. serotinus of Europe. Ears as long 

 as the head, oblong, and hairy one-half the length of the external part of 

 ears. Nose a little blunt, but nostrils approached ; tragus leaf-shaped, 

 erect, and half as long as the auricle ; point of the tail free. Incisors 4, iu 

 pairs above, and 6 below. Molars 5 throughout. 



Fur bicolored throughout; superior part of a brown "marron," but the 

 base of the hair is ashy black ; beneath of a yellow ash, the base of the 

 hair being brown. 



Total length, 2, 3 or 5 inches, of which the tail constitutes 1 inch ; ex- 

 panse, 10 inches. 



Hab. Charleston, S. C. 



V. phaiops. — The general contour like that of V. murhms. Point of tail 

 free ; tail not so long, strongly " sloped" out on external border, with a lobe 

 cut out behind. Tragus an erect leaf. Superior incisors 4 ; the external 

 are bilobed, and are larger than the internal. Inferior 6. Molars 4 above 

 and 5 below. 



Hair short and unicolored throughout, glossy, above brown, with a tinge 

 of red, below it is of clearer hue ; face and membranes blackish. 



Length, 4 in, 4 lines, or 5 inches — the tail being 2 inches ; expanse of 

 wing membrane, 12 to 13 inches ; antibrachium, 1 in. 8 lines. 



This is the*Black-faced Bat of Rafinesque, of which there is mention 

 made in Desm. Mam. in a note. 



Hab. N. A. ; our animal comes from Tennessee. 



V. pulverulentus. — Resembles, in the color of the superior fur, V. discolor ; 

 but differs from it in its lesser size, in the interfemoral being hairy on both 

 sides, and in the difference of color of the belly. Muzzle large and obtuse ; 

 ears larger than high, rounded, one-half haired ; tragiis hatchet-shaped ; 

 tail short ; interfemoral very hairy above, but less at the point than at 

 the base, that beneath of a clear " voie," and in concentric lines ; the toes 

 furred above. 



