74 



Two Species of Plecotus. 



not strongly contrasted as in the preceding species. The ears 

 are also fringed with fur in the same manner. Beneath, the 

 fur is of a reddish cinereous or ochreous hue, lighter towards 

 the tail, but not in the least whitish. The nose is similar, but 

 the fleshy crests between the eyes and nostrils appear to be 

 still larger, and in the preserved specimens are much more 

 conspicuous. The ears are similar, though every way more 

 ample in the present, and presenting a different outline imme- 

 diately after rising from the forehead ; the auricle broader and 

 larger. The wing and tail membranes are entirely naked, 

 dusky, of a thicker texture, and much more strongly reticulated 

 than in the first species. 



Incisors -j- 



Total length 

 Ears - - 

 Tail - - - 

 Fore arm - 

 Tibia - - 

 Spread - - 



l—l 



i r 



molars 



6-0 



=36. 



3.8 inches. 

 1.1 

 1.7 

 1.8 

 0.8 

 11.0 



Three specimens of this very distinct new species were 

 brought from the Columbia river by Mr. John K. Townsend, 

 where he procured them on his late journey in company with 

 Mr. Nuttall. It is very like the P. Le contii, but they may 

 be readily known by the color of the under part of the body, 

 besides which they differ in almost all their details of color 

 and proportions, the present being a larger and more robust 

 animal. Together they seem to form a small group in the 

 genus, characterized by the double fleshy crest of the nose, 

 which is not mentioned as occurring in any other species. 



I regret being obliged to describe these two Bats from dried 

 specimens, in which state the most characteristic marks, espe- 

 cially about the head, are often difficult to detect, whatever 

 pains are taken. I have used in describing the head of the 



