material described and figured in a comprehensive account 

 of his observations about to be pubhshed. 



Mr. W. B. Alexander, King's College, Cambridge, visited the 

 Department in order to study the material of the Prout-Bacot 

 Mendelian experiment on Acidalia virgtdaria. Professor 

 Joseph J. E. Gillet of Nivelles kindly undertook, Sept. 22-28, 

 a preliminary revision of the group of beetles in which he 

 is so distinguished an authority, the Copridae. An important 

 section of the family has since been sent to him for detailed 

 study. Dn R. Hanitsch, of the Raffles Museum, Singapore, 

 has studied the Orthoptera, Mr. L. B. Prout the Geometrid 

 moths, and Mr. Roger Verity, of Florence, the butterflies 

 of the genns Parnassitis. Mr. F. C. Woodforde, B.A., paid 

 many visits to the Department, studying the British Lepi- 

 doptera, and suggesting necessary modifications. He also 

 kindly assisted the Professor in arranging and checking the 

 lists of the books and papers presented by Mr. G. A. J. 

 Rothney, as well as other accessions to the Hope Library. 



The Department was also visited by Professor F. Jeffrey 

 Bell, M.A., Magdalen ; Dr. Henry Bolus, of Kenilworth, near 

 Cape Town; Prof. W. Haswell, F.R.S., of Sydney; and 

 Prof. Adam Sedgwick, F.R.S. 



9. Works published in 1910. 



Mr. H. Eltringham completed the preparation of his im- 

 portant monograph, African Mimetic Butterflies, which was 

 published by the Clarendon Press in the summer in time for 

 the meeting of the first International Entomological Congress 

 at Brussels. He also investigated the geographical distribu- 

 tion and relationships of two African Acraeine butterflies, 

 A. lycoa and A. johnstoni, and completed a paper with two 

 plates thereon, to be issued almost immediately by the Ento- 

 mological Society of London. Mr. Eltringham then began 

 to prepare a monograph on the whole of the Ethiopian 

 species of Acraeinae, a work which is still proceeding. In 

 the course of last year about 250 preparations of genitalia 

 have been made and studied. Mr. Eltringham has not only 

 examined the material in the Department, but that in the 



