Our knowledge of the Hymenoptera of the Island of Waigeu hitherto has been based on the material collected by Dr. A. R. Wallace and described by Mr. Frederick Smith in the Journal of the Linnean Society of London, 1863, pp. 6—48. Omitting the bees (5 species) and the ants (27 species) Smith describes and enumerates 27 species of the Families dealt with in this paper. An examination of this list shows a great difference between the species collected by Mrs. de Beaufort and Dr. Wallace, as will be seen by the Catalogue given here for the purpose of making my paper more complete and useful as regards Waigeu.