APPENDIX. 1 7 



new species, for wliicli we are indebted to Prince de Musignano ; these 

 specimens are preserved in alcohol, and are part of the same invoice as the 

 preceding species. Vesp. calcaratus, indicated by M. Rafinesque, has the 

 wing membranes about the fingers red above ; but it is much larger, and 

 the coloration of the fur is considerably different. 



Hab. North America, about the environs of Philadelphia. 



V. ferrugineus. — Style of V. daubentonii, of Europe. Nose short, obtuse ; 

 ears narrow, a little scooped out on the posterior border and towards the 

 tip ; tragus short, subulate. Tail very long, point free, the basal portion 

 covered with hair ; the claws of the hind feet are of a whitish yellow. 

 Upper incisors 4, in pairs, internal long " biseam" at point ; the external 

 short, bifurcated ; inferior incisors 6. Upper molars 4 ; lower 5, with one 

 .false molar. 



Hair short, smooth, bicolored ; above the color of a dead leaf, or more or 

 less reddish ; the base of the liair is of a brownish black beneath ; all the 

 hair at its base is of a faint blackish re<\, and the point pure wliite. These 

 two hues of the hair form a sort of black and white mixture which is very 

 conspicuous. The membranes of the ears, having been immersed in alco- 

 hol, are of a brownish red. 



Total length, 4 in., or 2 lines longer, that of the tail 1 in. 9 lines ; 

 humerus, 1 in. ; forearm, 1 in. 8 lines ; anal expanse, 10 iu. or 6 lines longer. 

 This species, based upon the examination of many alcoholic specimens, 

 is new. 



Hub. Holland Guiana. (Museum Pays Bus: from the environs of 

 Surinam.) 



F. 



Say. — Long's Expedition to the Rocky Mts. II, 65, note. 



Vespertilio subulatus. — A small bat was shot this evening, during the 

 twilight, as it flew rapidly in various directions over the surface of the 

 creek. It appears to be an immature specimen, as the molars are re- 

 markably long and acute ; the canines are very much incurved, and the 

 right inferior one is singularly biiid at tip — the divisions resembling short 

 bristles. This species is, beyond a doubt, distinct from the Carolina Bat 

 (F. carolinensis, Qeof.), ■with which, the ears are proportionately equally 

 elongated, and, as in that bat, a little ventricose on the anterior edge, so 

 as almost to extend over the eye ; but the tragus is much longer, narrower, 

 and more acute, resembling that of V. emarginatus, Geof., as well in form 

 as in proportion to the length of the ear. We call it V. subulatus, and it 

 may be thus described : Ears longer than broad, nearly as long as the 

 head, hairy on the basal lialf, a little ventricose on the anterior edge and 

 extending near to the eye ; tragus elongated, subulate ; the hair above 

 blackish at base, tip dull cinereous ; the interfemoral membrane hairy at 

 base, the hairs unicolored, and a few also scattered over its surface, and 



