The extensive freshly collected material available arose partly through the activities of the author under the auspices of the Royal Geographical Society-Sarawak Government Expedition and Survey of the Gunung Mulu National Park (1977-8), whilst financed by a Government Grant-in-Aid for Scientific Investigations administered by the Royal Society, and on a previous expedition (1965) to G. Kinabalu. Another large part of this material was accumulated and prepared by Col. M.G. Allen and Mr T.W. Harman during a series of expeditions in Brunei.

The Moths of Borneo was a core-funded programme of CAB International Institute of Entomology. This part was produced partly under these auspices and partly during the leisure time of the author. The author would like to thank his CIE colleagues Alan Wood for photographing the colour plates and Graham duHeaume for help with film processing.

The taxonomic work was undertaken at the British Museum (Natural History) with the permission of the Trustees and with the assistance and support of the Department of Entomology, particularly the Macrolepidoptera Section. I am very grateful to Dr I.J Kitching and Mr M.R. Honey for helpful discussions and comments on drafts of the text.

Thanks are due to Dr G.C. McGavin (Hope Entomological Collections, University of Oxford) and Dr R. de Jong (Rijksmuseum van Natuurlijke Historie, Leiden) for arranging loans of type material, and to Mr E.D. Edwards and Dr E.S. Nielsen for assistance with the identity of Australian taxa.

The series is dependent on the continuing support and energies of Mr H.S. Barlow, who also acts as a longstop for errors in the text (the blame for any that escape is mine).

Finally I would like to thank my wife, Phillipa, for once again taking on most of the burden of preparing the typescript amongst many other demands on her time.

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