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Show 578 REV. H. s. G O R H A M O N [June 20, the apex is subpubescent, but smooth and shining. The mesosternum is strongly punctured ; metasternum and episterna clothed with short pubescence, but very thinly. Abdomen shining. The palpi are pitchy, the maxillary ones paler at their tips, which are sharply acuminate. I have some doubts as to what genus this insect is best placed in. Thanasimus, as it now stands, is a complete magazine. Comparing this insect with T. formicarius, the antennae are rather long, and are in the middle wider and flatter, the apical joint rather larger and less cultriform; the head, trophi, eyes, thorax, form of tbe elytra, &c. agree fairly well; the femora and tarsi appear to ine also to agree sufficiently well. Two specimens were obtained. NEOHYDNUS, Gorham (Ann. Mus. Civ. Gen. ser. 2, xii. 1892, p. 742). N E O H Y D N U S BASALIS, n. sp. Niger ; elytris basi, pedibus basi, tibiarum apicibus tarsisque, antennis, palpisque testaceis, prothorace postice, fortiter contracto, antice transversim constricto, elgtris creberrime et confluenter punctatis. Long. 3 millim. Hab. Assam, Patkai Mountains (Boherty). The head in this little species is wider than the thorax and thickly clothed with silvery shining hairs; the eyes are large and oval and finely faceted, with numerous setose hairs ; the antennae are very short, reaching scarcely to the middle of the eyes, almost white. The thorax is wide in front, with a deeply impressed transverse line just behind the front margin, the sides strongly lobed immediately behind this line; the lobes with a small fossa on each, then much contracted to the constricted base. The elytra are about the same width as the head, parallel, almost variolose, the small callus, and a variable spot nearer the scutellum, often the whole base, is indeterminately white; the rest dull black, thickly clothed with short shining hairs. The legs are rather variable; the tibiae except at the apex, the femora except at tbe bases, are dark pitchy ; but the hind femora are sometimes quite testaceous, the tarsi are short. This species differs from N. despectus in the form of the thorax and with the following species will probably ultimately be separated generically; at present the points of resemblance- tbe structure of the antennae and head-justify its association with it. Several specimens. NEOHYDNUS RELUCENS, n. sp. Niger, nitidus ; pedibus basi tibiisque apicibus testaceis ; prothorace postice valde contracto, brevi; elytris profunde ac distincte punctatis, pube brevi pruinosa relucente. Long. 4 millim. Hab. Siam, Renong (Boherty). Allied to N. basalis, but larger and broader, the thorax not so |