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Show *887.] JAPANESE ENDOMYCHID/E. 649 3. PANAMOMUS BREVICORNIS, n. sp. Ferrugineus, prothorace parce sat fortiter punctato, disco nigro-piceo ; elytris punctato-striatis, disco subfasciato, nigro-piceo antennis breviusculis. Long. 2\ millim. Hab. M A I N I S L A N D : Miyanoshita. Allied to P. lewisi, the thorax is rather less bulky, with the sides more sinuate; the basal sulci are obsolete, not produced in finely impressed lines upon the disk, as in P. lewisi, the punctuation much more sparse and more deep and distinct. The antennae shorter, with the joints succeeding the basal one shorter and more bead-like. The elytra are more pointed behind, and the punctures of the striae larger and deeper, especially near the suture. One specimen only was obtained, in spring, at Miyanoshita. PH-EOMYCHUS, n. gen. I propose this new genus for Endomychus rufipennis of Motschulsky. This species differs from typical species of Endomychus, not only in general form, being more parallel, and having the thorax more quadrate, not narrowed in front, in the peculiar way of E. coccineus, &c, but also by having secondary sexual characters in the front tibiae, and by the presence of a stridulating-organ between the front margin of the pronotum and the head, which bears a file. I do not know any other species of the allied genera thus characterized at present. 1. PH/EOMVCHUS RUFIPENNIS, n. sp. (Plate LIII. fig. 3.) Endomychus rufipennis, Motsch. Etudes Ent. 1860, p. 18. Hab. M A I N I S L A N D : Nikko. Y E Z O : Hakodate. The tibiae of the front legs in this species are widened and compressed from below the middle, so as to give the idea of an obsolete tooth at that part. The prosternum is somewhat narrower at the tip of its intercoxal process, and passes the coxae further than in Cyanauges, to which genus it is otherwise more allied in form than to Endomychus. I think it possible that the insect described by me as Endomychus bicolor is congeneric with this species; as, however, I have not the type for comparison, and had not seen a male, I can only associate it doubtfully with it. I think it not improbable that some other Indian species will prove specifically distinct from the Japanese species which are closely related to them, and this appears to be so in this instance. The metasternum as well as the abdomen is red in P. rufipennis, whereas the metasternum was black in E. bicolor. Mr. Lewis met with many specimens of this insect at Nikko in June 1880, and at Hakodate in August, where it occurs on old logs and under planks. On the front margin of the pronotum of both sexes of this species is a depressed, prominent, and semitransparent point, which acts on a corresponding file on the base of the head as a stridulating-organ. At present I have not met with this character in any Cyanauges or |
