1905.] OF PHYTOPHAGOUS COLEOPTEPwA. 423 



0. navicularis, but is of more elongate and less convex sliape and 

 is much larger ; the thorax is longer and less transverse, 



Oedionychis bcuadoriensis, sp. n. 



Broadly ovate, the head, antennte, and the under side black ; 

 thorax flavous, impunctate ; eljdsra obscure j>ale fulvous with 

 slight purplish shade, extremely finely punctui'ed. 



Length 8 millim. 



Head with a few fine punctures near the eyes, finely granulate, 

 black, the frontal elevations pyriform, divided by a deep groove ; 

 clypeus flavous ; eyes very large, but not closely approached ; 

 antennae black, the basal three joints more or less testaceous 

 above, third joint slightly shorter than the foin'th ; thorax with 

 strongly rounded and broadly flattened sides, the anterior angles 

 acute but scarcely produced, the disc rather convex, flavous, 

 impunctate ; scutellum triangular, fulvous ; elytra widened 

 towards the middle, with broadly reflexed margins, the latter 

 pale ; the disc obscure fulvous with a slight purplish tint, very 

 finely and closely punctured ; under side and legs black or 

 piceous ; metatarsus very short, claw-joint strongly swollen, 



JIab. Ecuador. 



This is a species of peculiai'ly dull appearance, unless this is 

 caused by discoloration. The two specimens before me are, how- 

 ever, entirely similar in this respect, the shape is rather broadly 

 ovate, and the elytral margins are proportionately broad, 



Oedionychis rhodina, sp. n. 



Oblong, nearly parallel, black ; thoi'ax rather short, testaceous, 

 impunctate, the sides gradually flattened ; elytra without promi- 

 nent shoulders, testaceous, impunctate. 



Length 7-7 g millim. 



Head impiinctate, black ; frontal tubercles broad, ill-defined ; 

 eyes widely sepai-ated, with a few punctures placed between them ; 

 clypeus very short, strongly deflexed ; antennae not extending to 

 the middle of the elytra, black, the third and following joints 

 equal, terminal joints elongate ; thorax rather short, the sides 

 rounded anteriorly, the anterior margin concave, anterior angles 

 produced into a short, blunt tooth, the disc impunctate, shining, 

 testaceous, the sides flattened, but this portion limited within by 

 a shallow sulcus only; scutellum more or less piceous at the base; 

 elytra slightly wider at the base than the thorax, rather elongate, 

 feebly widened only towards the middle, the shoulders but slightly 

 prominent and bounded within by a shallow depression only, the 

 surface nearly impunctate ; below and the legs black, 



Uab. Espirito Santo, Brazil. 



A rather larger species, and principally differing in the less 

 strongly flattened sides of the thorax, the oblong shape of the 

 elytra and their less prominent shoulders and almost impunctate 

 surface. 



Paoc. ZooL. Soc— 1905, Yol. II. No, XXIX. 29 



