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Show 1 9 0 2 . ] SriDERS FROM BORNEO AND SINGAPORE. 2 7 5 Hab. North Borneo: S from Sandakan, June 28, 1894 (D. Cator, in the Tring Museum); § from Kuching, Oct. 1895 (Sarawak Museum, Kuching). Neuration similar to that of M. rhadamantha. 2. C O L E O P T E R A h o N G I C O R N I A , by C. J. G AHAN. E rythrus rotundicollis, sp. n. (Plate X X III. fig. 6, <$ .) Niger, elytris a basi usque paullo pone medium rujis : antennis quam corpore a quarta parte brevioribus, articulis 5° ad 10"'" ad apicem antice dentatis ; prothorace lateraliter rotundato, latitudine maximo ad medium, disco tuberculis duobus parvis nigro-pilosis vix ante medium positis instructo ; elytris postice ? otundatim attenuates, utnsque ad suticram breviter dentatis. Long. 17 ; lat. 4 mm. Hab. Mt. Santubong, 2600 ft., February 4, 1900. One male specimen. Black, \\ ith rather more than the basal half of the elytra red. Antennse about three-fourths the length of the body, with the joints from the fifth to the tenth produced into a tooth at the antero-distal angle. Prothorax rather strongly rounded at the sides and widest about the middle; the disk with two small velvety tubercles placed barely in front of the middle. Elytra slightly widening from the base up to about the posterior third or fourth, and thence narrowing towards the apex, where each ends in a small sutural spine ; the disk of each with a rather feeble costa extending from the base to a little beyond the middle. This species most resembles E. atricollis Pasc., but in the latter the dark apical area of the elytra is less extensive ; the prothorax is less rounded, is widest behind the middle, and on the disk has but a single median cariniform tubercle. E rythrus sternalis, sp. n. (Plate X X III. fig. 7, J .) Niger, elytris a basi usque pone medium rvfis : prothoracis disco tuberculo mediano inter medium basinque, et utrinque tuberculo parvo paullo ante basin posito, instructo; elytris postice rotundatim attenuatis, utrisque ad suturam sat valde spinosis ; prosterno inter coxas tuberculato, mesosterno postice minus fortiter tubercidato. Long. 2 0 ; lat. 4| vim. Hab. Mt. Matang, 3600 ft., June 1900. Two male specimens; in British Museum and Hope Collection, Oxford. Black, with basal three-fifths of the elytra red. Antennse about three-fourths the length of the body; fifth joint angulate, each of the succeeding joints up to the tenth strongly toothed in front at the apex. Prothorax strongly and thickly punctured, with a median cariniform tubercle between the middle and the base, and a small blunt tubercle on each side of the disk nearer to the base. Elytra rather strongly punctured ; the disk of each with a well-marked costa reaching from the base to within about 18* |