new Bat from the United States. 383 



Now, however, I am able to record that Leuconoe in it.s 

 most typical form does occur in that continent ; for Mr. J. 

 fTolliott Darling, a naturalist already known to zoologists for 

 his work in Mashonaland, has recently presented to the 

 British Museum a bat, obtained in the Yellowstone Park, 

 which is evidently closely allied to the typical species of the 

 subgenus, M. Daubentoni. 



Thanks to the kindness and generosity of the authorities of 

 the United States National Museum, I have had for com- 

 parison with Mr. Darling's bat a complete series of North- 

 American Myotis, as worked out in Mr. G. S. Miller's fine 

 monograph of the group. None of the bats there described 

 can be confused with it, nor have any species been described 

 since. 



It may be called 



Myotis [Leuconoe) carissima, sp. n. 



Closely allied to the European M. Daubentoni, which it 

 evidently represents in North America. 



General characters and proportions as in Daubentoni. 

 Sides of muzzle heavily whiskered. Ears narrow, of medium 

 length ; laid forward in the spirit-specimen they just reach 

 to the tip of the nostrils ; their inner margin evenly convex 

 below, slightly concave before the tip, which is narrowly 

 rounded off; outer margin excavated above, slightly convex 

 below ; basal lobe well marked, rounded. Tragus rather 

 short, with straight inner margin, narrowly rounded tip, 

 sloping outer margin, and well-defined basal lobe. 



Feet very large, their length more than two thirds that of 

 the tibia; claws medium. 



Wings attached to the side of the metatarsus. CaJcars 

 very long, more than double the length of the free portion of 

 the uropatagium, their tips forming prominent lobules exactly 

 as in Daubentoni ; no postcalcareal lobules. Tail scarcely 

 projecting from membrane. Wings hairy for about half an 

 inch on each side of the body, above and below ; base of 

 uropatagium thinly haired, its free edge quite without fringe. 

 Toes with tufts of hair overhanging the claws. 



Colour above and below (in spirit) uniformly smoky 

 blackish, the tips of the hairs indistinctly bufFy or pale 

 brown. Ears, wing-membranes, and feet also blackish. 



Anterior premolar about twice the size of the second, 

 decidedly drawn inwards, but in older specimens it might 

 take its place in the general line. 



Dimensions of the type (measured on the spirit-specimen) : — • 



Forearm 38 mm. 



Head and body 45 ; tail 36 ; head 17 ; ear 13 x 8; tragus 



