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Show 540 MR. C J. GAHAN ON THE [Dec. 4 tooth at about the middle of their length ; the head is strongly punctured above, excepting a smooth space posteriorly, the prothorax is rather strongly but somewhat sparsely punctured above, and its sides are somewhat rounded ; the elytra have each about 5 or 6 striae, but not more than 4 on each are apparent to the naked eye, and even these are not very distinct; the whole surface of the elytra is closely enough punctured. LEPTAULAX, sp. This is probably a local variety of L. timoriensis, Perch. It differs from that species only, so far as I can find, in the almost entire absence of punctures from the sides of the pronotum. The punctures are restricted to two or three close to the anterior margin, and to a single or double row of small punctures along the lateral margin. The single shallow, rounded depression on each side towards the posterior angle bears in some specimens two or three punctures, in others it is quite plain. The labrum and the surface of the head present the same characters as in L. timoriensis ; the middle tooth on the margin of the clypeus is a little less distinct, otherwise the margin of the clypeus is similarly toothed. CERESIUM NIGRUM, n. sp. Nigrum, subnitidum, antennis, palpis pedibusque ferrugineo-tes-taceis ; prothorace in medio disci et lateribus sparse punctatis, his fulvo-maculatis ; scutello fulvo ; elytris punctatis, punctis evanescentibus versus medium. Long. 11-16 millim. Black and shiny, with scattered pale grey hairs on the middle of the thorax above and on the elytra. The underside of the bodv and the legs with a faint greyish pubescence not thick enough to conceal the colour of the derm beneath. The fulvous spots form an irregular vitta on each side of the prothorax, similar in pattern to that on C. simplex, Gyllh. A feeble tubercle is to be found on each side close to the anterior margin of the thorax. The punctures on the basal half of the elytra are somewhat seriately arranged and are not very close. The last character essentially distinguishes the species from simplex, with which otherwise it seems to be closely allied. The colour of the derm is also very distinct. MONOHAMMUS NATIVITATIS, n. sp. M. mixto, Hope, similis, sed differt apicibus elytrorum sinuato-truncatis nee spinosis. Long. 21 millim. The single male example of this species closely resembles small males of M. mixtus ; but differs in the absence of spines or teeth from the apices of the elytra, in the presence of some scattered punctures on the middle basal part of the front oft he head, and in the proportionately somewhat slenderer third, fourth, and fifth antennal joints. As in M. mixtus, the cicatrice of the scape has an almost oomplete bordering rim, the front of tbe head is rather narrow, |
