PREFACE 5 



Mr. R. I. Pocock's important experiments, conducted in 

 the Zoological Gardens, on the palatability of British 

 insects (6), three papers (7-9) on the evolutionary significance 

 of the study of Mimicry by the Professor, Colonel Manders's 

 temperature experiments and criticisms of the theories of 

 Mimicry (10), Mr. J. C. Moulton's evidence in favour of 

 the same theories (11), Miss Bridges's experiments on the 

 colours of certain British larvae and pupae (1 2), Dr. Perkins's 

 account of the colour-groups of the Hawaiian wasps (13), 

 the late Mr. R. Shelford's paper (14) on Mimicry in the 

 Blattidae, already referred to, together with suggestions as 

 to the meaning of the strange shapes of the Membracidae 

 by the Professor, (9) in the Appendix, complete the series 

 of separate papers on bionomic questions, although the 

 great majority of the communications published in the 

 Proceedings of the Entomological Society in 1910 (34), 

 191 1 (35), and 191 2 (36) deal with similar subjects. The 

 long series of notes and brief papers in (35) and (36) will 

 give some idea of the varied work of the Hope Department 

 and of its close relations with naturalists resident in the 

 tropics, especially of Africa. A complete list of titles will 

 be found on pages 10-16 of the Contents, under (35) and 

 (36). Among those who have helped to bring together 

 this fine body of records I must specially mention my friends 

 in Africa — Dr. G. D. H. Carpenter, Mr. J. A. de Gaye, 

 Mr. W. A. Lamborn, Mr. G. F. Leigh, Mr. S. A. Neave, 

 Rev. K. St. Aubyn Rogers, Mr. C. F. M. Swynnerton, and 

 Mr. C. A. Wiggins, D.P.M.O. of the Uganda Protectorate ; 

 in Borneo — Mr. J. C. Moulton ; in the Sandwich Islands — 

 Dr. R. C. L. Perkins ; in Ceylon — Mr. E. E. Green ; in 

 India — Mr. T. Bainbrigge Fletcher; and among those at 

 home— Dr. F. A. Dixey, Mr. H. Eltringham, Dr. G. B. 

 Longstaff, Mr. Roland Trimen, and Commander J. J. 

 Walker. 



The papers on Systematics include (16) the third of the 



