OCR Text |
Show 1887.] JAPANESE ENDOMYCHIDAE. 647 as long, the disk convex, finely and sparsely punctured, rather pubescent, the lateral margin raised and flattened, sides rounded into the front angles. In the sulcate part of tbe disk, before the raised margin, are m a n y large punctures, and the margin itself is somewhat sulcate and punctured. The elytra are thickly and finely punctured, without any trace of striae, and are densely pubescent, with rather long ragged grey hairs; they are blackish,'with an ill-defined basal red spot, which covers the humeral angles, but does not quite reach the suture. The legs are pitchy-black, with pitchy-red tibiee and tarsi. The underside is wholly black. The prosternum is coarsely-punctured, including the posterior process, the breast smooth, the abdomen slightly pubescent, with its basal segment obsoletely punctured. Mr. Lewis informs m e that this species was not rare in the localities where he met with it. In its general appearance it reminds one of Dacne, but it is pubescent and more parallel. BOLBOMORPHUS, n. gen. Corpus oblongo-ovatum. Elytra convexa, valde gibbosa, apicibus acuminatis. Antenna modice elongata, clava parum dilatata. Oculi fortiter granulati. Palpi maxillares articulo ultimo truncato, subsubulato. Prothorax subquadratus, nitidus, angulis anticis acutis, sulcis basalibus brevibus distinctis; prosternum latum, fortiter punctatum, processu lato quadrato, apice leviter rotundata. Mesosternum transversum, utrinque antice sulcatum. Scutellum transverso-ovatum. Abdomen segmentis quinque tantum distinctis, segmento basali tribus sequentibus longiore, inter coxas valde latum, punctatum. Pedes validi, sat longi, femoribus haud clavatis, tarsis breviusculis. Sexus differentia latet. This new genus, the most interesting of M r . Lewis's fresh discoveries in this family, has very m u c h the general appearance of Eumorphus, but is in fact allied to Eucteanus, Gerst., by the wide prosternum, and, apparently, by the absence of secondary sexual characters, which are not usual in Gerstaecker's third division of the family, tiie Endomychini. It differs from it in the structure of the club of the antennae, which is largely developed in both E. hardwicki and E. marseuli, while in the Japan insect it is very little evident at all. Even more does it diverge in the coarsely granulated eyes and the wider prothorax, which is shining, though punctured, instead of being opaque as in both species of Eucteanus. 1. BOLBOMORPHUS GIBBOSUS, n. sp. (Plate LIII. fig. 4.) Niger, subanescens; prothorace transversa subquadrato, antice angustato, nitido, angulis anticis acutis productis, margine laterali incrassate reflexo, disco distincteparcius punctato ; elytris ovatis, convexis, gibbosis, crebre obsolete punctatis, singulis maculis duabus transversis, dentatis, flavis. Long. 8-9 millim. Hab. M A I N ISLAND : Kashiwagi. |