Iv PREFACE 
The value of a work of this kind, as a convenient index to the 
genera and species of the group which forms its subject-matter, 
is increased by anything which adds to the facility with which 
it can be consulted. It has accordingly been thought advisable 
to issue a general index to the whole series; and an additional 
motive for doing so is indicated in the Editor’s Preface. 
The several volumes of the ‘ Hand-list’ appeared in the years 
indicated below :— 
Vol. I. in 1899. 
s Ik 1900, 
og MEL, <y. “DOGR: 
» IV. ,, 1903. 
« We). feng. 
The sequence of the orders and families and the number of 
genera and species included are given in detail in Dr. Sharpe’s 
Introduction published in Vol. V. 
A work which appears under these conditions van never be 
complete ; since new genera and species continue to be described 
during its progress. Advantage has, however, been taken of the 
present opportunity to correct certain inaccuracies and omissions 
in the indexes of the volumes as issued. This task, which has 
proved far more laborious than would appear on the surface, 
has been supervised by Mr. W. R. Ogilvie-Grant. 
SIDNEY F. HARMER, 
British Museum (Natural History), Keeper of Zoology. 
London, March 1912. 
