170 BULLETIN 43, UNITED STATES NATIONAL MUSEUM. 



appeared to be made np of the arm and forearm acting as one factor, 

 the callosity over the first metacari>al bone serving as a point of resist- 

 ance. In taking flight from a flat snrface the animal appeared to spring 

 into the air as a lizard jnmps, no one portion of the body appea':iug to 

 move more thau another; but it is probably true that most of the act 

 was accomplished by the arm and forearm. In coming to rest at the 

 end of flight the wings often remained extended for a little while; some- 

 time one would be folded when the other was kept extended. When 

 placed on a horizontal surface, as a table top, the animal scurried to the 

 edge and often hung partially over. The flexible loin enabled the pelvis 

 and lower extremities to remain on the top of the table, while the rest 

 of the trunk was jjendent on the side. A number of the bats were 

 allowed to escai^e in a large room. They moved freely about the snrface 

 of a large table and made short flights to neighboring objects. No food 

 was partaken of, and at the end of a few days they became listless and, 

 since it was evident that they could not thrive, they were killed by im- 

 mersion in spirits. 



Measurements. An average taken from five individuals. 



Millimeters. 



Head and body (from crown of head to base of tail) 49 



Length of arm : 21 



Length of forearm 40 



First digit : 



Length of first metacarpal bone 3 



Length of first phalanx , 4 



Second digit: 



Length of second metacarpal bone 38 



Length of first phalanx 



Third digit : 



Length of third metacarpal bone 38 



Length of first phalanx 14 



Length of second phalanx 14 



Fourth digit : 



Length of fourth metacarpal bone 38 



Length of first phalanx 12 



Length of second phalanx 8 



Fifth digit: 



Length of fifth metacarpal bone 24 



Length of first phalanx 11 



Length of second phalanx '. 5 



Length of head 



Height of ear 13 



Height of tragus 4 



Length of thigh 



Length of tibia 11 



Length of foot 7 



Length of interfemoral membrane 



Length of tail in membrane 15 



Length of tail free from membrane 15 



