iv PREFACE 



of the region described, when the full name of that 

 species is added. 



Thanks are most gratefully offered to the Belgian 

 Government, Professor A. W. W. Brown, Col. Coachman, 

 Mrs. Cross, Miss Czaplicka, Mrs. Doyne, Sir S. Eardley 

 Wilmot, Mrs. Edwards, Captain C. T. Ffoulkes, Sir H. H. 

 Johnston, M. J. Lagarde, Mr. W. Lloyd, Mr. H. M. Loucas. 

 Mr. C. W. Mathers, Messrs. Seeley, Service & Co., the 

 Controller of H.M. Ordnance Survey, Professor A. 

 Donaldson Smith, Sir Aurel Stein, Mr. M. S. Thompson, 

 Sir Everard Im Thurn, Mrs. Traill, Messrs. Underwood 

 and Underwood, the Visual Instruction Committee, 

 Mrs. Watkins, Mr. C. M. Woodward for the loan of 

 photographs from which the illustrations have been 

 made, and to Miss MacMunn for most kindly reading 

 through the final proof. 



Miss Kirkaldy very kindly made herself responsible 

 for seeing the book through the press. 



OXFORD, 1920. 



