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Show 616 REV. H. s. G O R H A M ON [Dec. 3, fasciisque duabus denticulatis, una mediana ad suturam interrupta, una subapicali arcuata luteis ; antennis articulis duobus primis exceptis, tibiis tarsisque nigro-fuscis. Long. 12 millim. Hab. Peru, R. Ucayali (Bartlett). Var. prothorace nigro-marginato, punctis duobus externis cum margine conjunctis, elytris macula parva humerali et epipleuris basi fulvis. Hab. Amazons (Bates). Head and thorax forming a nearly even semicircle in front, the latter being excised deeply, but not widely, for the reception of the former, both of a uniform rich orange-red ; in the typical examples from Ucayale only the extreme limb, and this so narrowly as not to be apparent, is blackish. The ten spots are placed, four transversely in front, and six in a row behind these, the three on each side being arcuate, the four central ones forming a square. The scutellum is either rufous or pitchy. The elytra are evenly punctate-striate, the rows of punctures very finely impressed, the interstices smooth and shining. The underside wholly of the rich red colour of the head and thorax. The metasternal and abdominal lines both very fine and short. The prosternum is compressed, forming a blunt keel, a very little prominent in front. The elytral fascise are yellow, the basal markings more orange-coloured. The first fascia commences rather before the middle of the margin, but is oblique, reaching the suture about the middle ; it has two or three irregular teeth on each side. The epipleurse are quite black in the typical examples. The legs are of the body-colour, with black tibise and tarsi; in the variety the tibise are rufous at their tips. In the Amazons specimens the limb of the thorax is more distinctly black, and on the middle of the front has a triangular black spot, and on the base three such spots attached to it, the two exterior discoidal spots also being united, so that the six remaining spots form two equilateral triangles; the wide concave part of the epipleura is yellow. Four specimens of the typical form from Mr. E. Bartlett, and two of the variety from Crotch's collection, and two others from the Amazons in the collection of E. Armitage, Esq. 7. BRACHYSPHENUS BISTRIFOLIATUS, sp. nov. (Plate LXI. fig. 5.) Late ovatus, ater, nitidus ; elytris perobsolete punctato-striatis, singulis macula magna trifoliata basali, fasciaque lata, ad suturam interrupta, pone medium aurantiacis. Long. 13 millim. Hab. Peru, Chancamayo (Buckley). Labrum and palpi yellow; head and thorax smooth, the latter glabrous, twice as wide as long at the base, the front narrower, the basal median lobe nearly covers the scutellum; prosternum compressed, the apex of the process wrinkled. Elytra with red epipleurse, but the limb very narrowly black. The markings are peculiar; the basal one is like three irregularly shaped red spots |