1878 one volume was fouud sufficient for the whole of the Order, 

 rather less than one fifth of it being devoted to the Mega- 

 chiroptera, a volume of somewhat greater size is now needed for 

 the Megachiroptera only, while a corresponding enlargement will 

 probably take place in the part dealing with the other groups of 

 the Order. 



The Author indicates in his Preface that the number of specimens 

 belonging to the Museum has greatly increased since 1878, while 

 in addition he has been able to examine all the chief collections of 

 Chiroptera in Europe, notably those of Paris, Berlin, and Leyden, 

 and to borrow a large part of that of the U.S. National Museum at 

 Washington. The thanks of the Trustees are due to the Authorities 

 of the various Museums who have helped him in this respect. The 

 ■volume also' owes much to Mr. Oldfield Thomas, F.R.S., who 

 has interested himself in its progress since its commencement, 

 and has assisted the Author by discussing difficulties from time 

 to time as they arose, and in other wars. 



British Museum (Natural History). 

 February 22nd, 191--'. 



SIDNEY F. HAIIMER, 



Keeper of Zoology. 



J.?.'ii,"ilii[. '..L» rr! -,ri;,7'> ;!: 



ii(>iii!;»ii<fi'.; ^ii f -.>^\ rt'ii,niv\ 



J, ii! > :•■! ., 



ly.f.l,,, ■u\\ (,, .„:}. .f/-,,/f,' \p' 



T>in() 'ill J Vi litfMTjU 



•ii.t (*iit luii - -jii-h 



