M. JACOBY, SOME BOLIV. AND ARGENT. PHYTOPHAG. COLEOPTERA. 519 



Oedionychis sp. n. 



A single specimen from Tatarencla. 



Black, sides of the thorax flavons, elytra black with a 

 strongly dentate flavons transverse narrow band at the middle; 

 length 7 mill. 



Oedionychis sp. 



A single specimen from Salta. 



Black, eyes with a flavons margin within, thorax flavons 

 with three piceons spöts, elytra flavons, finely pnnctnred, the 

 sntnre and three narrow stripes, abbreviated at the apex, 

 black, epiplenrse flavons. Length 7 millim. 



Epitrix seneicollis sp. n. 



Piceons or dark fulvons, antenns and legs flavons, tho- 

 rax seneons or obscure pnrplish, finely pnnctnred; elytra 

 dark fnlvons, strongly pnnctate-striate, the interstices finely 

 pnbescent, longitndinally costate at the sides. 



Length 1 1 h mill. 



Head not perceptibly pnnctnred, the eyes large, the in- 

 traocnlar space bonnded by a deep, obliqne gr 00 ve at each 

 side, clypens wedgeshaped, antenna? robnst, entirely flavons, 

 the third and föurth joint small, eqnal, each shorter than 

 the second joint, terminal joints thickened; thorax abont one 

 half broader than long, transversely convex, the sides nearly 

 straight, the basal margin distinctly prodnced at the middle, 

 the basal snlcns deep and straight, bonnded at each side by 

 a perpendicnlar groove, the disc finely and rather closely 

 pnnctnred, the space behind the snlcns likewise partly punc- 

 tate, the colonr obscnre dark pnrplish, scntellnm very small; 

 elytra with a distinct transverse depression below the base, 

 closely and rather strongly pnnctate-striate, the interstices 

 clothed with yellow hairs, distinctly costate at the sides, legs 

 flavons, the posterior femora sometimes fnlvons. 



Hab. Qninta, Argentine. 



There are several species of Epitrix which seem very 

 closely allied to the present one, notably E. ubaquensis Har. 

 from Colombia bnt E. ceneicollis seems to differ from this 

 and several nearly allied forms in the colonr of the thorax 

 and in the costate elytral interstices at the sides, neither 



