280 



slightly longer than the third; thorax scarcely twice as broad as 

 long, narrowed in front, the sides straight, the anterior angles 

 slightly oblique, the surface impunctate without any basai sulcus, 

 the latéral grooves just indicated ; elytra convex, extremely minu- 

 tely punctured; underside and legs coloured as above, a streak on 

 the upper edge of the anterior femora and the tibiae and tarsi, black. 

 This small Lactica agrées in everything with its many similarly 

 coloured allies except in the almost total absence of a thoracic 

 sulcus, the latter is however frequently obsolète in several other 

 species, although not to that extend as in the présent one, this 

 character together with the straight sides of the thorax and the 

 gênerai convex shape will assist in the récognition of L. thoracica. 



Oedionychis bolivianus n. sp. 



Black, the liead, thorax and the abdomen parlly Jlavous ; 

 elytra Hue or cupreous, impunctate, tlie latéral margin and the 

 apical third portion, Jlavous. 



Length 3 1/2 lines. 



Head impunctate, flavous, the labrum and the palpi black; 

 antennae black, slender; thorax rather more than twice as broad as 

 long, the sides rounded, narrowed towards the apex, the anterior 

 angles produced into a tooth, the dise entirely impunctate, flavous, 

 rather broadly flattened at the sides; scutellum black; elytra with 

 a dépression below the base, scarcely widened posteriorly, metallic 

 blue orcupreous, the apical portion broadly and the latéral margin 

 narrowly flavous; breast and the legs black, abdomen at the sides 

 flavous, the metatarsus of the posterior legs longer than the follo- 

 wing joint, claw-joint strongly swollen. 



Allied to 0. sagulata Erichs., but differing in the impunctate 

 elytra and their flavous apex which extends upwards to a third of 

 their length. I also possess this species from Colombia. 



Schematiza apicicomis n. sp. 



Black, the lower portion of the face and apical two joints ofthe 

 antennae flavous, thorax fuscous, the sides flavous ; elytra fnely, 

 ruqose, fuscous, the latéral margin and a spot at the apex flavous. 



Length 2 1/4 lines. 



Of narrowly elongate shape, the head fuscous at the vertex, 

 flavous between the antennae, the labrum black, antennae short, 

 gradually and slightly thiokened at the apical joints, black, the 

 last two joints flavous, the third joint the longest, thorax twice as 

 broad as long, the sides slightly rounded at the middle, flavous, 



