1905. | OF PHYTOPHAGOUS COLEOPTERA. 457 
Head entirely impunctate, broad, the eyes small and round ; 
frontal elevations strongly raised, subquadrate ; labrum piceous ; 
antenne long and slender, the lower four joints pale, the others 
piceous, third and fourth joints elongate, equal, terminal joints 
shorter, robust and thickened; thorax about twice as broad 
as long, the sides broadly flattened, posterior margin perfectly 
straight, the surface impunctate, testaceous; elytra finely and 
closely punctured—of the spots, two are placed transversely at the 
base, one on the shoulders, the other near the scutellum, two at 
the middle, with the outer one lower than the other, and two of 
exactly similar position near the apex; breast and abdomen, as 
well as the knees of all the legs and the tarsi, black; claws 
strongly swollen. 
Hab. Buenos Ayres. 
This is another of the small black-spotted species, of which 
I received two specimens from Mr. C. Bruch, of the La Plata 
Museum ; the position and number of the spots and the colour of 
the legs separate the species from O. atropwnctata and others. 
OEDIONYCHIS NIGROPUNCTATA, Sp. N. 
Black, the sides of the thorax broadly testaceous, the surface 
impunctate; elytra extremely minutely punctured, testaceous, 
the sutural margins, three small spots at the base, a spot near the 
suture at the middle, and another below the latter, of each 
elytron black. 
Length 7 millim. 
Of posteriorly slightly widened shape; the head with a few 
punctures at the vertex, the latter black; the space in front 
of the eyes testaceous, these widely separated; frontal ele- 
vations indistinct; clypeus triangularly pointed between the 
antenne; labrum obscure testaceous; antenne extending just 
below the base of the elytra, black, the third joint slightly shorter 
than the fourth, this and the following joints robust and propor- 
tionately short, subquadrately cylindrical ; thorax twice as broad 
as long, the lateral margins strongly rounded, the anterior angles 
produced forwards, the sides broadly sulcate, the disc impunctate, 
black, in shape of a transverse irregular band, the sides broadly 
testaceous ; scutellum black; elytra extremely minutely and 
closely punctured, testaceous, with three small black spots placed 
on the basal margin (one at the shoulders and two at the middle) 
and another larger subsutural spot immediately before, as well as 
a smaller one below, the middle of each elytron; besides these 
spots, the dise is stained with irregular fuscous patches, which 
are specially pronounced near the suture ; under side and legs 
black. 
Hab. Bolivia. 
A rather peculiarly marked species, of which I know only a 
single specimen. The elytral fuscous patches are probably due to 
discoloration. 
31* 
