10 
It is not too much to say that, although a few other collec- 
tions of Pzerzzae may be larger, there is no collection of this 
sub-family in the world which can afford so much real help 
to the student or inspire so many problems for research as 
that in the University Museum. 
In the course of this ten years’ labour Dr. Dixey has written 
many memoirs upon the Pzerzzae, or upon subjects suggested 
by them, such as Mimicry—Miillerian and Batesian. Separata 
of all these have appeared in the four volumes of the Hope 
Report. The last of these memoirs appeared in 1903, an in- 
teresting account of the Lepidoptera from the White Nile, 
presented to the Department by Mr. W. L. S. Loat, F.Z.S., 
together with further notes on Seasonal Dimorphism in Butter- 
flies (Trans. Ent. Soc. Lond., 1903, p. 141). 
Early in the year Mr. S. A. Neave, B.A., Magdalen College, 
began work in the Department as a preparation for African 
travel. The first part of Mr. C. A. Wiggins’ splendid dona- 
tion had arrived but a few weeks and had not yet been studied. 
The Professor suggested that Mr. Neave should work at this 
material, which came from probably the most instructive part 
of the continent, where, round the shores of Lake Victoria 
Nyanza, the fauna of the great western tropical forest meets 
and is interpenetrated by the fauna of the more open country 
on the east. Mr. Neave was soon deeply interested in the 
determination of species, the classification and the bionomic 
problems of Mimicry and Common Warning Colours. His 
projected journey fortunately fell through, so that when, later 
on, he was appointed as naturalist to the Surveying Expe- 
dition which the Chartered Company is sending to study for 
two years the country between the Zambesi and Lake Tan- 
ganyika, he started after a full year’s work, including a large 
part of the vacations, spent in gaining a thorough knowledge 
of the forms he will now study in their natural environment. 
Just before sailing he received the proofs of his memoir, giving 
a list of all the species collected by Mr, Wiggins, and describ- 
ing thirty new species or sub-species. A further paper on the 
bionomic problems he determined to write on the voyage. 
