118 
a difference in the size of the terminal joint of the antenne as com- 
pared with the penultimate joint, as that represented by M. Solier’s 
figure—indeed the penultimate joint and terminal appear to me to 
be equal in size, or most nearly so. 
Eripeponora aFFinis. Hpip. atra, nitida: capite anticé punctis spar- 
sis, et postice rugis transversis undulatis, notato ; thorace latiore 
quam longo, ad medium depresso, rugis vel plicis fere longitudina- 
libus, ad latera transversis notato ; elytris thorace latioribus, prope 
suturam fere levibus, singulorum dimidio externo sulcis transversis, 
his costd longitudinali, in duas series divisis ; prosterno sulcis 
distinctis longitudinalibus ; segmentis abdominalibus leviter longi- 
tudinali-sulcatis. 
Long. corp. 9} lin. ; lat. 54 lin. 
Hab. Petorca? 
This species is of a shorter and broader form than Epip. ebenina, 
the furrows on the thorax are smaller and more numerous, and the 
elytra present but one distinct costa besides the lateral keel, the ridge 
corresponding to that nearest the suture in EL. ebenina, being here ob- 
literated, or very nearly so. 
The head presents some scattered punctures in front, and, gene- 
rally, there are some waved transverse impressions towards the hinder 
part, leaving narrow ridges between them. The thorax is twice as 
broad as long, has the sides distinctly rounded, the fore-part emar- 
ginated in the form of a segment of a circle; the anterior angles are 
acute, and there is a small indentation in the outer margin close to 
the angle; the posterior margin is nearly straight in the middle, but 
the angles are produced: the upper_part of the thorax presents a 
slightly concave surface, and is covered with small sulci; those in the 
middle are oblique, converging to or towards the hinder part of the 
mesial line ; about midway between this line and the outer margin 
they become longitudinal in their direction, and a space bordering the 
lateral margin is covered with oblique but nearly transverse narrow 
grooves and ridges. The width of the elytra, compared with that 
of the thorax, is nearly as seven to five, and the elytra are about 
one-fourth longer than broad, or rather less; the dorsal surface is 
plane and almost destitute of sculpturing; on the sides are two 
series of transverse furrows, which are separated by a strong costal 
ridge; the innermost of these two series of transverse grooves is ob- 
literated towards the base and apex of the elytron, but in the middle 
they are strongly marked, as are also the transverse grooves between 
the costal ridge and the lateral keel : on the apical half of each elytron 
a faint trace of the costa, corresponding to the innermost one in EZ. 
ebenina, is observable. 
Numerous specimens of this new species were contained in Mr. 
Bridges’s collection. 
Epipedonota ebenina, Solier. Nyctelia ebenina, Auct. 
Four specimens of this species were brought by Mr. Darwin from 
Mendoza; two of these are females, and present a character I have 
not before observed in the species, viz. some zigzag white lines at 
