14 K^UI) ANDERSES (180) 



remain in their hiding places. However, we may assume that 

 sometimes a bat is, involuntarily, carried seawards; if so, it would, 

 almost invariably, be swept down by the gale into the sea and 

 perish. We may again assume that it reaches an island; it would 

 probably arrive there in an exhausted or seriously mutilated 

 condition. We may suppose, once more, that it recovers; but in 

 this case it must, in order to be the founder of a new colony, 

 have been accompanied by, or within a reasonable space of time 

 be followed by, an individual of the same species and the opposite 

 sex, brought across the water under similar, exceptionally success- 

 ful conditions. It appears safe to assume that this series of happy 

 coincidences exceedingly rarely occur in nature; so rarely, indeed, 

 that it seems very unlikely that they should have any marked 

 influence on the geographical distribution of bats. 



Measurements of Rlt. cognatus and refulgem. 





/?//. cognatus. 



nil. 



■cfnlgens. 



2 adults. 

 2 skulls. 



2 adults, 

 2 skulls. 





Min. 



Max. 



Min. 



Max. 





mm. 



mm. 



mm. 



mm. 





IS 





18.3 



15 



7 







14 





14.7 



12 









S 



2 



8.6 



7 



5 







4(1. 



3 



40.7 



40. 



6 



41.5 



3rd digit, metacarpal 



29 





29.6 



28. 



3 



29.2 





11 



3 



12.2 



10 



8 



11.5 





10 





16.8 



14. 



2 



15.3 



4th digit, metacarpal 



29 



8 



30 



29. 



2 



30.2 





8. 



2 



8.5 



8. 



5 



8.5 





11) 



7 



11 



9. 



5 



10 





29 



5 



29.6 



28 



8 



29.7 





9 





9.2 



9 





9 





10 



7 



11 



10 





10.2 



Tail 



20 



5 



21 



10 



7 



19 





17 





17.7 



15 



9 



10 





8 



5 



9 



8 



3 





Skull, total length to front of c 



IS 



1 



IS. 3 



17 



2 



17.2 



» basilar length to front of c. . . . 



11 



6 



14.8 



13 



4 







8 



8 



8.8 







8.4 





7 







7.8 







7.8 





9 





9 



8 



3 













6.8 



6 



5 



6.7 



» across cingula of c 



4 



8 



5 



4 



6 



4.6 





5 



1 



5.2 



4 



8 



4.8 





12 



5 



12.5 



II 



4 



11.8 





7 





7 



6 



3 



6.8 







7 



7.7 



6 



9 



7.1 



