39 



root. The colours may be thus briefly given : — dusky-grey (at the 

 root), yellowish-buff, umber-brown, and finally white. The vvhite 

 is most plentiful on the shoulders, along the middle of the back, and 

 on the rump ; the yellow colour prevails on the head and neck, but 

 becomes less in regular gradation towards the rump, where the brown 

 in great measure takes its place, which it does completely oa the in- 

 terfemoral membrana. 



The under surface is nearly similar, but differs in having the co- 

 lours paler, the yellovv less conspicuous, and the tips of the hairs 

 bufF-coloured instead of white. On the under parts, as on the upper, 

 the yellowish colour gives way to the brown on approaching the 

 hinder parts, and the hair on the coutiguous part of the interfemoral 

 membrane is wholly dark for the greater part of its length, and 

 is tipped with light brown. At the insertion of the humerus is a 

 light-coloured spot. The fur of the sides of the body, uuder the 

 arms, is of a brownish-buif colour. Ali the fur on the wing-mem- 

 branes is buffy-yellow. 



The membranes are dark, excepting where there is a growth of 

 hair, such parts being reddish-brown. 



Dentition.-In. ig^ ; C. {i; ; P.M. f^; M. '^=f^. 



In the following Table of dimensions, columu No. 1 has beeu 

 taken from a specimen purchased of Mr. J. G. Bell of New York, 

 No. 2 from a specimen in the British Museum, from the United 

 States, and No. 3 from a specimen not cjuite adult, taken in Ber- 

 muda by the Rev. H. B. Tristram, and very kindly forwarded byhim 

 for my use. 



No. 1. No. 2. No. 3, 



in. lin. in. liii. iu. liii. 



Length of the head and body, about . . 3 6 3 10 2 10 



of the tail 110 



of the head 11 .... 10 



oftheear O 4i .... O 4^ 



of the tragus O 3 O 3 



of the fore-arm 2 3 2 2 2 



of the longest finger 4 4 4 O 4 O 



of the fourth finger 2 8 2 7 2 4 



of the thumb O 6 O 6 



of the tibia 011 O 9 



of the foot and claws O 6 O 5 O 5į 



= — of the os calcis O 9 .... O 7i 



Expanse of wings 16 6 .... 15 6 



Hab. North America, not abundant. 



Major Le Conte observes, that he has only had the opportunity 

 of cxamiuing six or seven examples. The British Museum contains 

 a specimen from California, and another presented by Mr. W. S. 

 MacLeay is labelled South America. Assuniing the latter specimen 

 to be correctly labelled, its locality renders it j)robable that this spe- 

 cies, likę the lašt, is distributed over a considerable part of the New 



