VESPERTILIO. 



61 



the interfeitioral membrane are also of a light color. In other re- 

 spects the characters are the same as the other specimens. The 

 dried specimen, No. 5512, labelled by Dr. Leconte V. oregonensis, 

 though never described by him, probably belongs to this variety. 

 If the individuals having the above coloration should be found to 

 constitute a new species, this name will be reserved for it 



Hab. The species appears, as far as known, to be confined to 

 the regions west of the Rocky Mountains. 



Fig. 59. 



V. nitidus. (Slightly enlarged.) 



Measurements. 



