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Show 576 REV. H. s. GORHAM ON [June 20, elytris obsolete punctato-striatis, striis dorso obliteratis. Long. 13-16 millim. Hab. Manipur (Boherty). The larger size and plain brown colour will distinguish this species from any other yet described. The antennae are long and thin, the three last joints hardly wider than those preceding them ; the head and thorax smooth and shining, with the punctuation very fine ; the anterior constriction very plain on the sides, and a fovea on each side below it. The elytra are very plain ; though the usual sculpture is present it is all reduced, the flat sutural smooth space being but little emphasized. The legs are paler, with the knees just tipped with black. Although plain this is a fine species, reminding one of certain Gymatoderae. Five specimens. XENORTHRIUS WALLACEI, n. sp. Nigro-piceus; antennis, palpis, pedibusque basi testaceis, elytris pallide variegatis, prothorace incequali, nitidiore vage punctulato, basi in medio tuberculo parvo, elytris basi et lateraliter subrugose punctato-striatis. Long. 8*5 millim. Hab. Borneo, Sarawak (Wallace). Nearly allied to X. ephippiatus and differing from it as follows : the colour is darker, the thorax is more shining and more uneven and its disk less thickly and more vaguely punctured, on each side of a basal median tubercle are two sulci, thus making three raised tumid spaces; the elytra are more coarsely punctured and the yellow markings not so clearly defined, the apical one being an undulate fascia, and the apex being dark, like the rest of the groundcolour. One specimen. I have had this insect for many years and have never been able satisfactorily to classify it. It was unknown to the late M. Chevrolat, to w h o m I sent it. XENORTHRIUS TRUNCATUS, n. sp. Rufo-piceus, nitidus; pedibus et fascia elytrorum haud bene discreta pallidioribus, elytris truncatis et mucronatis. Long. 12 millim. Hab. Assam, Patkai Mountains (Boherty). This species is longer though not much wider than the largest specimen of X. ephippiatus; tbe antennae are much longer, all the joints, and especially the three terminal ones, being longer; the thorax is more shining, the posterior part more sparingly and obsoletely punctured. The elytra have the flattened space not so wide, the third row of punctures persisting further towards the apex ; their fascia is not so well marked nor so white, being very little paler than the ground-colour. The apex is cleanly cut out in an arcuate way, with a distinct mucro at the outer angle of this excision. The legs are long, pale, with the knees and tarsi a little darker. One example. |