NEW SPECIES OF SOUTH AMERICAN EUMOLPID.E. 169 



the rest black, third and fourth joints equal, terminal joints thickened ; 

 thorax in the male at least three times broader than long, the sides 

 strongly rounded and widened at the middle, the anterior angles 

 slightly produced outwards, the surface finely and rather closely 

 punctured, the interstices at the sides slightly wrinkled and with a 

 rather obsolete fovea ; scutellum much broader than long ; elytra not 

 wider at the base than the thorax, with a short transverse depression 

 below the base, scarcely more strongly punctured than the thorax, 

 the punctures arranged in closely approached semi-regular rows, 

 distinct to the apex ; below very sparingly pubescent ; femora rather 

 swollen. 



Hah. — Cayenne. 



Of this, the largest species of the genus, I possess a male and 

 female specimen ; the latter is of almost double the size and 

 width, but does not differ in other respects ; both sexes are of a 

 much more ovate shape than is generally the case with species 

 of this genus. 



Chalcophana impressipennis, n. sp. 



Dark rufous ; the antennae (the basal three joints excepted), the 

 apex of the tibiae, and the tarsi blackish blue ; thorax irregularly 

 punctured ; elytra finely punctate-striate, metallic cupreous or green, 

 margined with fulvous at the sides, the disc with two or three short 

 costae below the base, the latter with oblique deep humeral depression. 

 Length 4|-5 lines. 



J . Head rather finely and sparingly punctured at the vertex, the 

 middle with a foven, more strongly punctate; clypeus subquadrately 

 elongate, smooth, bounded behind by a deep groove ; labrum and 

 palpi rufous; antennae long, bluish black, the basal three joints rufous ; 

 thorax strongly narrowed in front, the anterior angles acutely pro- 

 duced, the sides strongly rounded, the disc irregularly impressed with 

 larger and smaller punctures ; scutellum rufous ; elytra much pointed 

 posteriorly, cupreous or green, the lateral margin and the epipleur^e 

 narrowly rufous, the shoulders bounded within with a deep, oblique, 

 longitudinal depression, followed by two or three very short costfe at 

 the sides, the depression deeply punctured, the rest of the disc finely 

 and evenly punctate-striate, the rows not geminate and rather dis- 

 tant, the punctures finer towards the apex, the suture raised at the 

 posterior half ; under side and \Qgi rufous ; the apex of the tibiae and 

 the tarsi blackish blue, clothed with yellowish pubescence ; breast and 

 abdomen impunctate ; the prosternum smooth, rather broad. 



Hah. — Bolivia. 



I only know the females of this species, which is one of the 

 largest of the genus and distinct on account of the deej) intra- 

 humeral groove of the elytra and the short costae below this 

 groove at the middle of the sides ; but whether this species is 

 but the female of C. suavis, Har., which is described as having 

 neither basal depression nor costae, it is impossible to say, since 

 the author does not mention what sex he had before him. 



