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Show 1H90.] COLEOPTERA FROM CENTRAL AFRICA. 491 nis articulis 3°-llm, tibiis et tarsis fulvis ; tuberculo mesosterni valido, prosterni minor e. acuto. Antennce ( 3 ?) cor pore paullo longiores, robustce, apice acuminata', articulis arete conjunciis. Long. 16 millim. One example only. A closely-allied species from the Gaboon and Cameroons mimics Phryneta nigropilosa (Aurivillius) in a similar way. PACHYSTOLA DECTJSSATA, Chevrolat. A single example of this Calabar species. It is hardly a true Pachystola, the middle tibiae having & straight outer edge. PETROGNATHA GIGAS, Fabr. A single example, agreeing perfectly with others received from Lagos. ACMOCERA UNDULATA, Quedenfeldt, Berl. ent. Zeits. 1882, pp. 185, 354. Found originally on the Quango river, examples from which locality have been compared with those obtained by Mr. Bonny. OLENECAMPTUS HOFMANNI, Quedenfeldt, Berl. ent. Zeits. 1882, p. 355, t. vi. f. 10. Also found on the Quango. FREA MACULICORNIS, Thorns. A species apparently common in the Gaboon country on the coast. DlCHOSTATES (?) BIMACULATUS, n. sp. Breviter et late ovatus, nigro-nitidus, maculatim albo-griseo-tomen-tosus ; elytris grosse subconfluenter punctatis, in funclopunctorum solum tomentosis, utrinque prope apicem macula penicillata nigra thorace brevi et lato, antice valde rotundatim angustato, lateribus inermi, basi transversim sulcuto, margine basali utrinque valde sinuato ; elytris basi latis, humeris oblique subtruncatis. Long. 11 millim. One example. The species belongs to a small group in which the usual lateral tubercles of the thorax are absent. The short ovate and broad form and the short triangular scutellum separate it from Eumimetes. The antennae are as in Dichostates, the scape planed beneath and much shorter than the third joint. In the example described, doubtless a 2 . the antennae are shorter than the body and the joints 5-11 short, the last pointed. The prosternum is vertical before and behind, and the mesosternum broad and vertical in front. DICHOSTATES COLLARIS, Chevrolat. Many examples, agreeing with others received from Old Calabar, whence the species was originally described. It is found also at Lagos and Cape Coast Castle, and extends, slightly modified in |