THE INSECTS OF MACQUARIE ISLAND. 
By R. J. Trttyvarp, M.A., D.Sc., FLS., FES. 
With Appendices describing a new Hymenopteron, by Professor C. T. BRuES, Ph.D., 
Bussey Institute, Forest Hills, Boston, Mass., U.S.A., and a new Coleopteron, by 
A. M. Lea, F.E.S., Entomologist to the South Australian Museum, Adelaide, South 
Australia. 
(With twenty-one figures in the Text.) 
INTRODUCTION. 
THE small collection of insects brought back by the Mawson Antarctic Expedition was 
made by Mr. H. Hamilton, Biologist to the Macquarie Island Party. All the insects 
were collected on Macquarie Island between May, 1912, and November, 1913. The 
collection was handed to me for study in February, 1917, by Professor W. A. Haswell, 
M.A., D.Sc., F.R.S., to whom I desire to express my best thanks for offering me the 
chance of working out the material collected. 
For the Lent Term, 1917, I was granted leave by the Council of the Linnean 
Society of New South Wales to act temporarily as Lecturer and Demonstrator in 
Zoology in the University of Sydney, in order to filla vacancy caused by war conditions. 
The opportunity was taken to work out this Antarctic material during those three 
months. The delay in completion of the work has been entirely due to the difficulty of 
getting specialists to work out some of the obscure groups represented. My best thanks 
are due to Professor Brues for a very excellent description of a new Diapriid, 
accompanied by a finely executed figure, and to Mr. Arthur M. Lea, the well-known 
Coleopterist, for a description of an obscure Staphylinid. These descriptions will be 
found in Appendices A and B of this paper respectively. 
The collection also contained some obscure Cyclorrhaphous Diptera in the form 
of three species of kelp-feeding flies, which could only be satisfactorily dealt with by a 
recognised expert in such groups. After some delay, these were forwarded, through 
Professor Brues, to Mr. F. Knab, at Washington. No acknowledgment of their safe 
arrival came to hand from the latter gentleman; and it was not until some time later 
that I learnt of Mr. Knab’s illness and death, which has been so great a loss to the science 
of entomology. Having now to face the possibility of much further delay in securing 
the return of these specimens, and in getting another expert to undertake the working 
out of the material, I have finally decided to exclude the Diptera Cyclorrhapha from 
this paper, and to put the results, which have been in my hands for some time, together 
into the form of a single whole for publication. 
