1905. | OF PHYTOPHAGOUS COLEOPTERA. 443 
and fourth joints equal; thorax scarcely more than twice as 
broad as long, the sides with well-marked flattened margins, 
feebly rounded, anterior angles not produced, the surface im- 
punctate, testaceous ; scutellum piceous ; elytra visibly punctured 
only when seen under a very strong lens, with narrow flattened 
margins, testaceous, with two transverse nearly black bands, the 
first at the base, of somewhat triangular shape, and connected at 
the suture with another broader band below the middle, not 
extending to the apex, neither of the bands extends quite to the 
lateral margins; breast and abdomen black, legs testaceous, 
Hab. Bolivia. 
A small and very variable species, in which the nearly black 
vertex of the head seems to be the only constant character so 
far as coloration is concerned. The description is based on a 
specimen in which the elytral bands are mostly developed ; the 
elytra in this form may be described as black, with the lateral 
and apical margins, as well as a slightly oblique transverse band 
at the middle, testaceous, this band not extending to the suture ; 
in this specimen the posterior tibiz and tarsi are black. In the 
var. @ the dark bands are smaller and disconnected, and the 
posterior one is in shape of an oblong patch on each elytron; in 
var. 6 there is only a black spot near the scutellum and an elongate 
larger one placed near the suture below the middle ; while in var. ¢ 
the elytra are entirely unspotted. In all these forms, however, 
the base of the head and the underside remain black, 
OEDIONYCHIS ZNEA, sp. n. (Clark, MS8.). 
Fulvous ; thorax flavous, the sides broadly sulcate; elytra very 
convex and strongly widened at the middle, minutely punctured, 
a transverse band at the base and another one, narrowed at the 
suture and not extending to either margin, violaceous blue. 
Length 8 millim. 
Head fulvous, impunctate, frontal elevations narrow and trans- 
verse, carina acute, eyes not closely approached ; antennee with 
the third joint much shorter than the fourth, fulvous (the other 
joints wanting); thorax more than twice as broad as long, the 
sides strongly rounded and broadly suleate, the anterior angles 
slightly mucronate and strongly thickened, posterior margin 
sinuate at each side, the disc impunctate, flavous; scutellum 
fusco-viclaceous; elytra strongly widened and convex, flavous, 
with a broad transverse band at the base not extending to the 
lateral margins, of violaceous-blue colour, but more or less dark 
fulvous when viewed sideways, another band, rather suddenly 
widened at its outer end, is placed below the middle but does not 
extend to either margin; the flavous portion separating these bands 
is of about the same width as the bands themselves; breast and 
the femora dark fulvous, tibie and tarsi flavous; metatarsus very 
short, claw-joint strongly swollen. 
Hab. Kiga, Amazon (Bates). 
The description of this species is based on a specimen named 
