1905. ] OF PHYTOPHAGOUS COLEOPTERA. 425 
Length 8 millim. 
Of strongly convex, posteriorly widened shape, the head dis- 
tinctly punctured at the vertex and near the eyes, black, the 
middle of the base with a short longitudinal groove, frontal 
tubercles narrow and transverse: antenne black, not extending 
to the middle of the elytra, the lower three joints testaceous 
below, short, the third joint slightly shorter than the fourth; 
thorax strongly transverse, the lateral margins strongly rounded, 
the anterior angles thickened but not dentiform, the sides rather 
broadly flattened, the disc minutely aciculate and extremely finely 
punctured ; scutellum black; elytra strongly convex, rather 
suddenly deflexed below the middle, closely, evenly and strongly 
punctured, the sides below the shoulders somewhat flattened, the 
margins only slightly thickened, not reflexed, the extreme basal 
and sutural margins black ; abdomen obscure testaceous ; rest of 
the under surface and the legs black, 
Hab. Sao Pauioc, Brazil. 
Amongst the nearly unicolorous species the present one is well 
distinguished by the shape and sculpture of the thorax and 
elytra and by the coloration. O. balyi Cl, has a differently 
shaped thorax and finely wrinkled elytra, 
O®DIONYCHIS NIGROTIBIALIS, Sp. nh, 
Head pale fulvous, the antennx, the anterior and intermediate 
tibiz, and the tarsi black; thorax flavous; elytra fulvous, nearly 
impunctate; under side and legs testaceous. 
Length 6 millim. 
Oblong-ovate; the head pale fulvous, with a few punctures near 
the eyes; labrum piceous; antennz black, the third and fourth 
joints equal, terminal joints shorter and thicker; thorax rather 
strongly convex, the siles rounded and broadly flattened, the 
anterior angles thickened, slightly truncate, not produced, the 
surface very shining, impunctate, flavous; scutellum black ; elytra 
dark fulvous, impunctate, with the exception of a short double 
row of punctures below the shoulders; below pale fulvous, the 
anterior and intermediate tibiz and all the tarsi black, posterior 
tibiee fulvous. 
Hab, St. Catharina, Brazil. 
Of rather convex and oval shape, and distinguished by the 
flavous thorax and the colour of the legs. 
OEDIONYCHIS CONSIMILIS, sp. n. (Clark Catal.). 
Black, the elypeus testaceous; thorax with broadly flattened 
sides, impunctate, testaceous; scutellum black; elytra very finely, 
partly obsoletely punctured, testaceous. 
Length 8 millim, 
Of posteriorly slightly widened shape; the head black, with a 
few punctures placed in a row in front of the eyes; clypeus tes- 
taceous, the carina very prominent; antennz black, the lower two 
Pag 
