PREFACE. 



.ALTHOUGH issued in the midst of the great European 

 struggle, the chief part of the work represented by this 

 volume was accomplished in more peaceful days when 

 labourers in the various fields of science still worked 

 throughout Europe in friendly co-operation and the war 

 existed only in the programmes of German political am- 

 bition. Thanks to such co-operation I have had the great 

 advantage of being able to examine the types of most of the 

 previously-known Indian species figuring here. As before, 

 the names of those of which a type or co-type has been 

 examined are marked with an asterisk. 



Many of these types are in the British Museum, but for 

 the loan of the rest I am indebted to the willing help of the 

 many friends who, at my request, have submitted them for 

 my examination with invariable courtesy and kindness. I 

 wish to place on record my grateful thanks to M. Pierre 

 Lesne, who has enabled me to examine the numerous types 

 of Blanchard and Fairmaire in the Paris Museum ; M. Rene 

 Oberthiir, who has sent me the types of Bates in his own 

 collection ; M. Severin, for those of Candeze in the Brussels 

 Museum; Dr. Frey-Gessner, of the Geneva Museum, for 

 the loan of several types of Burmeister contained in that 

 collection ; Professor Poulton, for lending me those of 

 Hope, Newman and Westwood in the Oxford Museum ; 

 Mr. F. H. Gravely for those of Brenske in the Indian 

 Museum, Calcutta; the Utfe Df. L. Ganglbauer, for the 



