4 



Society," on the relation of the colours of pupae to the 

 surroundings of the larvae, &c. Much of the recorded work 

 was done in the Hope Department in 1898 and 1H99, by 

 Professor Poulton, assisted by Miss Cora B. Sanders, Miss 

 Mabel E, Notley, and Miss Florence A. Wright. Observations 

 of Mr. W. Holland and Mr. A. H, Hamm are also described 

 in the paper. 



The experimental inquiry into the struggle for existence in 

 insects was continued by Professor Poulton, Miss Notley, and 

 Miss Wright, aided by the Government Grant Committee of 

 the Royal Society. 



A large amount of work was involved in studying and 

 making out the species contained in the collections illustrating 

 mimicry and allied subjects made by Mr. R. Shelford, chiefly 

 in Borneo, and by Mr. Guy A. K. Marshall, chiefly in 

 Mashonaland. In this work Professor Poulton has received 

 much kind help from the staff of the British Museum of 

 Natural History, from Mr. R. McLachlan, F.R.S., and 

 Mr. M. Jacoby. 



Dr. F. A. Dixey, M.A., Wadham College, has undertaken 

 a prolonged investigation into the secondary sexual characters 

 of the Pierinae. 



Mr. T. N. Annandale, B.A., Balliol College, investigated the 

 insects and other forms brought by him from Siam, and 

 commenced a paper upon various aspects of their natural 

 history. 



Additions to the Collection in 1896. 



A valuable collection of 357 insects, chiefly Rhynchota, 

 Hemiptera and Homoptera, from Sydney, Brisbane, New 

 Zealand, and Java (1891-1893), was presented by Julius 

 Langhans, Esq., Hertford College. In the press of other 

 work, the setting, printing, and cataloguing was deferred until 

 1899. The specimens are now incorporated, and are a very 

 welcome addition to the important collections by which these 

 two Sub-Orders are represented in the Hope Museum. 



