South American Eumolpidm. 483 



feeble transverse depression below the base, strongly punctured in 

 irregular double rows, the interstices (especially at the base, sides 

 and apex) longitudinally convex ; below and the legs black, shining, 

 the intermediate tibiae slightly curved, strongly sulcate, the first 

 joint of the anterior tarsi strongly dilated ; prosternuni broad, its 

 surface concave, nearly smooth. 



Hob. Peru. 



The thorax in this species has the sides ahnost entire, a 

 slight angulation only being visible before the middle. This, 

 the general black colour and tliat of the antenme and the 

 convex elytral interstices distinguish the species from its 

 allies. The female does not differ except in the normal 

 not dilated anterior tarsi. 



Bluibdopterus imitans, sp. n. 



Broad and robust, black, thorax irregularly and strongly punctured, 

 the interstices rugose, elytra deeply punctate-striate, the interstices 

 strongly longitudinally costate, the sides rugosely punctured. 



Length 7 millim. 



Mas. At first sight this species may be taken for the female of 

 the preceding species, but as I have both sexes of that insect before 

 me, there can be no doubt about the present one representing another 

 species. The diff'erences are as follows : — the general colour is not of 

 such a pronounced black but has a slight cupreous or purplish tint, 

 the second and third joints of the antenna; are shorter, the punctua- 

 tion of the thorax is quite different, strong, irregular and with raised 

 or rugose interstices at the sides ; the elytra have only single rows of 

 punctures, occasionally doubled, irregular and closely placed at the 

 sides, and the interstices are more strongly costate. In all other 

 respects the species agrees with the preceding one. I possess two 

 exactly similar specimens. 



Hob. Peru. 



Rhahdopterus colomhiensis, sp. n. 



Dark asneous, the antenme flavous, the seventh and the apical two 

 joints piceous, thorax subangulate at the sides, remotely and not very 

 strongly punctured, elytra more strongly and closely punctate-striate, 

 the interstices longitudinally costate at the apex, legs obscure piceous. 



Length 6 millim. 



Mas. Head finely and somewhat closely punctured, the clypcus 

 separated from the face, similarly sculptured, labrum fulvous, antennaj 

 extending beyond the middle of the elytra, flavous, the seventh and 



