| OCR Text |
Show 1°89.] NEW SPECIES O F EROTYLID^E. 617 united, the exterior one being in one instance disunited. The merest rudiments of punctures or strise remain. The scutellum is depressed at the base to receive the lobe of the thorax. It is difficult to compare this with any other species. It is, I think, best placed next B. distinctus. 8. BRACHYSPHENUS BATESI, sp. nov. (Plate LXI. fig. 7.) Breviter oblongus, fere ellipticus, aterrimus, glaber; elytris dimidio basali flavis, fasciis tribus e maculis irregularibus nigris formatis, prima basali valde undulata, secunda maculas quatuor punctiformes prcebente, tertia e strigis sex obliquis plerumque constituta in singulis elytris. Long. 10-11 millim. Hab. Amazons (Bates). The form of this species is unusally convex; it is oblong, almost evenly wide before and behind, the extremity of the elytra being a little more pointed than the front. The surface is quite smooth in two specimens, in two others there is on the elytra very obsolete serial punctuation. The wavy fascise on the yellow part of the elytra are variable, being very often formed, in the basal one, of two inverted V's, thus AA> w i t n a dot external and a linear mark internal to them. In the third fascia there are three V's inverted, but the linear spots are often all disunited ; the margin of the black apical half is tridentate on each elytron. This is one of many beautiful species of Erotylidse brought by Mr. H. W . Bates from the Amazons which have hitherto escaped recognition. Two specimens in Crotch's collection and two in that of E. Armitage, Esq. It should be placed after B. musicalis. 9. BRACHYSPHENUS INCAS, sp. nov. (Plate LXI. fig. 4.) Breviter ovatus, niger ; elytris tenuiter geminato-striato-punctatis, fasciis duabus ad suturam interruptis, una basali, una pone medium, epipleurisque flavis. Long. 11 millim. Hab. Peru, Chancamayo. This insect resembles rather closely B. bizonatus, Crotch, and is allied to it by the geminate series of punctures and by the yellow epipleurse ; it differs from it in being less convex, and by the form of the yellow fascise, which are not so broad; the anterior one is basal and is notched on its apical side, so as to appear somewhat arcuate ; the postmedial fascia is irregular on both its sides (but not dentate), rather narrower near the suture. The epipleurse are yellow except in the apical quarter, and, as usual, the entire extremely narrow limb of the margin is black. This species also somewhat resembles B. epipleuralis, Crotch; the geminate series of punctures will separate it. No metasternal nor abdominal lines are present. Three specimens, in my own collection. PROC. ZOOL. Soc-1889, No. XLI. 41 |
