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 : antennae 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 sti'ongly 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. 



Hah. Sao Paulo, 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. 0. halyi CI. has a differently 

 shaped thorax and finely wrinkled elytra. 



Oedionychis nigeotibtalis, sp. n. 



Head pale fulvous, the antennae, the anterior and intermediate 

 tibiae, and the tarsi black ; thoi"ax flavous ; elytra fulvous, nearly 

 impunctate ; under side and legs testaceous. 



Length 6 millim. 



Oblong-ovate ; the head pale fulvous, with a few pu.nctures near 

 the eyes ; labrum piceous ; antennae black, the third and fourth 

 joints equal, terminal joints shorter and thicker ; thorax rather 

 strongly convex, the sides 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 tibiae and all the tarsi black, posterior 

 tibiae fulvous. 



Hah. 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 clypeus testaceous ; thorax with broadly flattened 

 sides, impunctate, testaceous ; scutellum black ; elytra very finely, 

 partly obsoletely punctured, testaceous. 



Length 8 millim. 



Of posteriorly sKghtly 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 ; antennae black, the lower two 



29* 



