518 ARKIV FÖR ZOOLOGI. BAND 1. 



thorax impunctate, elytra subcylindrical, finely and closely 

 punctured anteriorly, without basal depression. 



Length 2 millim. 



Head impunctate, the trontal elevations distinctly raised, 

 oblique, the carina short and acute, eyes large, antennse black, 

 the lower five joints flavous, third and fourth joint equal, 

 terminal joints more elongate, extending beyond the middle 

 of the elytra, thorax transversely subquadrate, rather con- 

 vex, the sides nearly straight, the basal sulcus very deep r 

 slightly sinuate, continued at the sides a little way, the disc 

 and the base below the sulcus with a few very fine punctu- 

 res (in one specimen absent), elytra without basal depression, 

 closely and finely punctured in subregular rows distinct to 

 the apex. 



Hab. San Louis, Bolivia und Salta, Argentine Rep. 



"Whether the specimens of which one each was obtained 

 at the above localities are really representing the same spe- 

 cies or not, it is difficult to say without more material 

 for examination; in one of them the thorax is entirely im- 

 punctate and the elytral punctuation finer and nearly obsolete 

 near the apex and the antenme seem to have somewhat more 

 elongate joints. The species is very closely allied to H. lae- 

 viuscula Har. but the latter is deseribed with an elytral basal 

 depression and differently coloured femora, H. fackdis Baly 

 differs likewise in having the elytra depressed below the base 

 and a different thoracic sulcus. The present species is one 

 of the smallest of the genus and has the groove of the thorax 

 very deeply impressed. 



Systena testaceovittata Clark. 

 Quinta. 



Systena Salvini Jac. var. ? 

 A single specimen from Quinta. 



Homophoeta sexnotata Har. 



Salta. 



Oedionychis lateralis Baly 

 Salta. 



