1889.] NEW SPECIES OF EROTYLlDvE. 617 



united, the exterior one being in one instance disunited. The 

 merest rudiments of punctures or striae 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 ohlongus, fere ellipticus, aterrimus, glaber ; elytris 

 dimidio basali fiavis, fasciis tribus e macuUs irregularibus 

 nigris formatis, prima basali valde undulata, secunda maculas 

 quatuor punctiformes prcebente, tertia e strigis sex obliquis 

 pterumque 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 fasciae on the yellow part of the 

 elytra are variable, being very often formed, in the basal one, of two 

 inverted Vs, thus ^^, with a dot external and a linear mark internal 

 to them. In the third fascia there are three Vs 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 Erotylidae 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 fiavis. 



Long. 1 1 millim. 



Hab. Peru, Chancamayo. 



This insect resembles rather closely B. bisonatus, 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 fasciae, 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 epipleurae 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 



