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Show 1 9 0 2 . ] SPIDERS FROM BORNEO AND SINGAPORE. 231 It is frequently possible to pair a mimicking species with a definite specific model, but perhaps more frequently the mimic (either a Batesian or a Mullerian mimic) in its general appearance resembles a whole group of known distasteful insects; or, in other words, the general appearance of the mimic is typical of a distasteful group, rather than exactly similar to one definite species ; and in these tables of mimetic Longicorns and their models I have by no means included all, but merely typical models. The diagrammatic tables of convergent groups of pseud-aposematic and svnaposematic insects at the end of the paper include, however, all the known distasteful insects which serve as models in the respective groups. In the Appendices are described a new species of Butterfly, a new Moth, two new genera and several species of Longicorn Beetles, two new Clerids, and two new Brenthids. I owe the description of all except the first-mentioned species to the kindness of Dr. Karl Jordan, Mr. 0. J. Gahan, the Rev. H. S. Gorham, and Dr. A. Senna. Professor E. B. Poulton, F.R.S., has added some interesting and suggestive remarks on my observations: these are scattered throughout the paper, but in all cases his initials are affixed. My task, in the absence of a large library and of named collections for comparison and reference, has not been easy, but I have received the most valuable and generous aid from Professor Poulton, whom I feel that I can never sufficiently thank. It is not too much to say that had it not been for his help this paper could not have been written. Most of the specimens here described and figured are now deposited in the Hope Museum, Oxford, where they can be seen by all students of the subject. I am much indebted to Mr. H. 1ST. Ridley, Director of the Botanic Gardens, Singapore, for directing my attention to some interesting cases of mimicry observed by him and for some valuable notes thereon. Mr. Gilbert J. Arrow, Monsieur Jules Bourgeois, Mr. Malcolm Burr, Sir G. Hampson, Dr. F. A. Dixey, Dr. R. Gestro, the Rev.O. Pickard-Cambridge, F.R.S., Mr. R. McLachlan, F.R.S., Mr. W . L. Distant, Mr. C. J. Gahan, Dr. Senna, Mr. M. Jacoby, Col. Bingham, Mr. E. E. Austen, Mr. C. O. Waterhouse, Dr. Brunner von Wattenwyl, and Col. Yerbury have rendered much kind assistance in identifying many of the species noted in this paper, and to these gentlemen I tender my grateful thanks. I. 0RTH0PTERA AS MIMICS. i. Mimic. Larva of Hymenopus bicornis (Stoll). Plate X IX . figs. 1/ & 19. X 2. Model. Larva of Eulyes amcena (Fab.). Plate X IX . figs. 16 & 18. X 2. The newly-hatched larvae of Hymenopus bicornis, one of the |