110 BULLETIN 43, UNITED STATES NATIONAL MUSEUM. 



groves. The young were found to be more "beautiful " than the adults 

 and alone to possess perfect silvery tips to the hairs. This tiict is not 

 borne out by my examinations. I have found less difterence in the 

 color of the young and adult than in other species, and between the 

 half-grown aiid the adult forms I have observed none of the contrasts 

 which are so noteworthy in A.fuscus. 



Mr. Merriam states that this bat has been known after being wounded 

 and falling into the water to swim powerfully and swiftly against a 

 strong current to the shore. This is an interesting tact. Mere flutter- 

 ing of the wings of a wounded animal could not so direct the animal. 

 It nuist be that a coordinated act (presumably in imitation of the act 

 of flight) propelled the animal through the water. 



Meaauremente. 



TT « -w M * Collection 

 ^•^:.-i:, • ofG.S.Mil- 



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



Length of arm 



Length of forearm ; 



First digit : 



Length of first metacarpal bone 



Length of phalanges 



Second digit: 



Length of second matacarpal bone 



Length of lirst phalanx 



Third digit: 



Length of third metacarpal bone^. 



Length of first phalanx 



Length of second phalanx 



Fourth digit : , ^ 



Lengt h of fourth metacarpal bone 



Length of first phalanx 



Length of second phalanx 



Fifth digit : 



Length of fifth metacarpal bone 



Length of first phalanx 



Length of second phalanx 



Length of head 



Height of ear 



Height of tragus 



Length of thigh 



Length of tibia 



Length of foot 



Length of tailt • 



5291. 



St. Louis, 



Mo. 



37 



2.34 



38 



33 



13 



6 



34 



12 



6 



31J 



7 



4 

 17 



9 



ler, 1000. 



Beaverton, 



Oregon. 



38 

 23 

 364 



2 



35 

 4 



35 

 14 



104 



35 

 14 



7 



33 

 10 

 5 



me[lifl^rence"?n some of the measurements of the two examples is due to the immaturity of 

 specimen No. 5291. 



Measurements from first edition of Monograph. 



Current number. 



?^"°J. T ♦! Length Length 



tip of ILength ^ff^\ J 

 nosetoioftail. ^^^ ^n,ia. 

 tail. 1 



3328 



4729 



746 



74 



2231 



1785 



In. 

 2.6 

 2.9 

 2.5 

 2.3 



'"2.6 

 2.2 



In. 

 1.6 

 1.5 



1.5 



In. 

 1.7 

 1.6 

 1.7 

 1.6 



Length 



of 

 longest 

 finger. 



In. 

 0.6 

 0.6 

 0.6 

 0.6 



" o.'e 



0.7 



I-enf^ ! Height ^«^f* 



thumb. ; 



In. 

 2.9 

 2.9 

 2.9 

 2.9 



2.7 



In. I 

 0.3 I 

 0.3 

 0.3 



0.3 j 



"6.3 I 

 0.4 



tragus. 



In. 



0.6 



0.6 

 0.6 

 O.C4 



"o.'e ' 

 0.54 



In. 

 0.2 

 0.24 

 0.24 

 0.3 



"6.3" 

 0.24 



Nature 



of SIMJCi- 



Ex- 



In. 



12.0 

 12.0 



Dry. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



