Mr. H.W. Bates on the EndomychidaB of the Amazon Valley. 165 



5. Corynomalus Tiumeralis, n. sp. 



C. rufo-ferrugineus, antennis, articulis duobus basalibus exceptis, tibiisque 



nigris ; tliorace lato, angulis anticis obtusis ; el}i:ris breviter cordatis, 

 mediocriter subrugoso-punctatis, interstitiis perminute punctulatis, vio- 

 laceis, nitidis, himieris apicibusque macula flava. — Long. lin. 3^ ( $ ). 



Head finely punctured, shining. Antenn86 with the basal joint 

 bright red, second pitchy, the rest black, shining. Thorax similar in 

 shape to that of C. discoideiis, but having the fore-angles more produced, 

 smooth, shining, finely punctured. Elytra obtuse-cordate, not quite so 

 convex as in C. discoideus, covered with moderately large shallow punc- 

 tures here and there connected by rugfe, the interstices glossy and 

 finely pmictm-ed ; violet or brassy-violet, the very prominent and glossy 

 humeral callus and a subrounded spot at the extreme apex yellow. The 

 body beneath shining red ; the under-margins of the elytra brassy- 

 piceous, rugose ; the basal half of the tibiai black. 



I have two examples, both females, of this species, which I took 

 at St. Paulo. 



6. Corynomalus Icetus, n. sp. 



C rufo-feiTugineus, antennis, articidis duobus basalibus exceptis, tibiisque 

 nigris ; thorace pone basin parum ampliato, angidis anticis prominidis, 

 acutis ; elytris elongato-cordatis, fortiter rugoso-pimctatis, interstitiis 

 convexis, subtiliter pimctulatis, Ifete cyaneis, margine flavo apud latera 

 angustissimo, apud humeros et apices in maculam amplificato. — Long, 

 lin. 3f ((?). 



Shining red. Head punctured. Two basal joints of antennae red, 

 the rest black, shining. Thorax with the sides slightly and very 

 gradually widened to a little beyond the middle, thence rather more 

 abruptly to the apices, which are produced and acute. Scutellum red, 

 smooth. Elytra more elongate than in C. discoideus, otherwise similar 



- in shape, not quite so convex, roughly rugose-punctate ; the interstices 

 raised and finely punctured, shining steel-blue ; the lateral margins 

 nan-owly edged with yellow, which colour expands at the shoulders 

 into a large spot covering the humeral callus, and at the apex into a 

 triangular spot. Beneath, the under-margins of the elytra are yellow, 

 with a stripe along the inner edge brassy ; the tibiae have the basal 

 half black ; the rest of the imder surface and the legs are red. 



One example, also from St. Paulo. Notwithstanding the consi- 

 derable points of diiFerence between this and the preceding, I am 

 inclined to consider them as belonging to one and the same species. 

 I think it probable that the C. apicalis of Gerstaeckcr is another 

 variety. I believe we have to deal here with a veiy variable species, 

 which would require a much larger number of examples to enable 

 us to define its limits correctly, and unfortunately I neglected whilst 



VOL. I. N 



