viii Introduction. 



Dr. \V. F. Thornton; Mr. P. R. Dupont ; Dr. Bancroft; Mr. 



-toehr : Dr. H. Strachan ; Dr. Power; Dr. Oswald Cruz; 

 \)v. Leicester, and many others. 



My thanks are especially due to Miss Ludlow and Mr. C. 

 Bankfl for sending rne their co-types, and to the former for much 

 valuable aid and in keeping me informed of all new discoveries 

 made in her wide sphere of work, and also to Dr. L. 0. Howard, 

 Chief of the Bureau of Entomology, U.S.A. 



Lastly, I must express my thanks to Mr. S. Bothwell and 

 Mr, C. O. Waterhouse, for kindly reading over the proofs of this 

 volume, and to the many correspondents in all parts of the world 

 for their kind interest and help. 



The original illustrations have all been prepared by Miss C. 

 Heard, those reproduced, by Mr. Eric Molecey ; the photographs 

 been taken by Mr. Edenden and Mr. Hammond. 



Fred. V. Theobald. 



November 10//*, 1906. 



Note, — Plates iii. and iv. in vol. iii. were reproduced from 

 drawings by D. A. Turkhud, M.B., and were unfortunately not 

 acknowledged a* the time. 



