82 APPENDIX. 



I. 



Prin€E Maximil. von Wied. — Yerzeich. beobach. Saugethiere 

 in Nord Amerika, 1862, 19. 



Vespertilio brevirostris. — Description : Head very short ; snout broad, 

 and but little produced ; ear tolerably high, rather elliptical, the anterior 

 border somewhat rounded, the outer nearly straight, under the tip slightly 

 emargiuated ; tragus rather small, nearly lancet-shaped ; the fur about 

 the head very plentiful, so that the eyps are entirely hidden. 



Dentition. — The specimen of this bat is lost, so I cannot therefore furnish 

 the dentition. 



The expansion of the wings rather small. Thumbs long and small, with 

 greatly curved nails. Tail somewhat long, eight or nine joints lying on 

 the outer half of the fur of the interfemoral membrane, the tip, however, 

 is one and a half to two lines long, with the free points exserted ; tbe five 

 hind toes are long, the nails weak, and sharply curved ; calcaneum rather 

 long ; fur thick about the belly, mouse-like, that of the back longer ; 

 wing membranes near the body are somewliat furred. 



Coloration. — Expansion of wing membranes and ears are dark brown; 

 upper portion of the body dark yellowish-brown, the hair on the outer 

 half fallow yellowish-brown, dark gray at the roots ; under portion whitish 

 yellow-gray. 



Measurements. — Entire length, 3 inches ; expanse of wing membrane, 9 

 in. 4 lines ; height of ears on the upper side 51 lines ; length of the ex- 

 posed portion of the tragus, \l lines ; the tail is free from the fur about 1 

 in. 5 lines ; length of calcaneum, 5 lines. 



I obtained this bat at Freiburg, Pennsylvania, about the latter part of 

 .July. It flies about ratlier early in the morning. We have observed that 

 this bat resembles the other species closely, but it is readily distinguished 

 by the shortness of the head, as the name given to it implies. 



