174 BULLETIN 13, UNITED STATES NATIONAL MUSEUM. 



Siuce I have never seen Nyctinomus macrotis iu the adult form, or from 

 localities from which it was first collected, I have thought it best to iden- 

 tify the specimens described as JSf. macrotus nevadencis. 



In specimen No. 15178, the head and body measures 60™'" which is 

 prol)ably nearer the adult tlmn in the preceding- exami)le. The length 

 of the arm is 25""" and that of the forearm 54"'"'. The other measure- 

 ments are not of sufficient value to be separately made. 



Habitat. — Nevada and California, according to Dobson, N. macrotis 

 has been collected in Cuba and Brazil (Mato Grosso), and Paraguay. 

 This writer assigns Dysopes anrispinosits of Peale to N'. macrotis. In 

 this connection it is of interest to state that Mr. Peale collected I>. au- 

 ris2)inosus at sea. The specimen flew on the vessel ofl" the coast of Brazil 

 100 miles from laud. 



MEA.SUKKMKNTS. 



[Ko. 15178, U. S. N. M.] 



Millimeters. 



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



Length of arm 28 



Length of forearm 52 



First digit : 



Length of first metacarpal bone 3 



Length of first phalanx 4 



Second digit : 



Length of second metacarpal V)one 45 



Length of first phalanx 



Third digit : 



Length of third metacarpal bone 46 



Length of first phahmx 15 



Length of second plialanx 12 



Fourth digit : 



Length of fourth metacarpal bone 42 



Length of first phalanx 12 



Length of second phalanx 2 



Fifth digit : 



Length of fifth metacarpal bone 24 



Length of first phalanx 15 



Length of second phalanx 4 



Lenth of head 20 



Height of ear 15 



Height of tragus 2 



Width of tragus 2 



Length of thigh 18 



Length of tibia 13 



Length of foot 10 



Length of interfemoral membrane 



Length of tail entire , 43 



Length of tail (free portion) 23 



* U. S. Exploring Expedition^ Mamm. and Ornith., 1848, 22. 



