DESCRIPTION OF A NEW BAT. 6 



the outer margin becomes abruptly convex and then nearly- 

 straight, with a distinct reflexed lobe near its base. Tragus at- 

 tenuated above ; inner margin straight or slightl\ convex ; outer 

 margin slightly concave in upper half, then slightly convex, 

 with a distinct lobule at the base, which is separated by a 

 notch from the convexity above. 



Thumb very small, considerably shorter than the foot. Foot 

 small. Wings from base of toes. Upper surface of wing- 

 membranes haired from about the middle of the humerus to 

 the knee ; basal third of upper surface of interfemoral mem- 

 brane covered with hair ; on under sin-face of interfemoral the 

 hair is arranged in little tufts along transverse lines, about 

 thirteen in number. Half of last vertebra of tail free. 



Fur long and soft ; basal portion dusky ; apical portion vary- 

 ing from whitish or yellowish-white to isabella-brown (tawny- 

 isabella in the New Mexico specimens), which in sohie indi- 

 viduals is nearly as dark as in I '. subulatus : the colored apical 

 portion varies in extent from less than one-third to more than 

 one-half the length of the hairs. 



Oleaster ements front alcoholic specimens. — Male adult (No. 

 2794 Merriam Collection) : Head and body. 42 mm. ; head, 

 16.25 i^i^"'- ' tail, 37 mm. ; ear, trom inner basal angle, 15 

 mm. ; tragus, 6.7^ mm. ; humerus, 22 mm. ; forearm, 32.50 

 mm. ; thumb, 3.75 mm. ; third finger, ^6 mm. ; fifth finger, 

 44 mm.; tibia, 11.25 nim. ; hind foot, 7 nim. 



Female adult (type, No. 2797 Merriam Collection) : Head 

 and body, 43 mm. ; head, 16.25 mm. ; tail. 40 mm. ; ear. 

 from inner basal angle, 15 mm. ; tragus, 6.75 mm. ; humerus, 

 22 mm. ; forearm, 33 mm. ; thumb, 3.50 mm. ; third finger, 

 ^6 mm.; fifth finger, 45.50 mm.; tibia, 11.50 mm.; hind 

 foot, 7.50 mm. 



