veio Species o/TIisteritla?. 319 



base, iti a line with the .second dorsal stria, there is a line 

 ohlique stria bent inwards at tiie basal ed<^e and in length 

 about one third of that of the thorax ; the elytra, the inner 

 hunu'ral stria is coni]detc and carinate in tlie basal iialf, 

 1 dorsal Hue and e()ni|iK'te and incurved at the apex, 2 com- 

 plete and similarly tine and turns inwards at the base, 3 is 

 very sliort basal and hamate, between the third stria and the 

 suture along the base is a very fine widely arched stria, which 

 apparently represents the fourth and sutural strite, there is no 

 tilth stria, but there is a • very fine stria round the apical 

 margin which continues partly along the suture ; the surfaces 

 of the ])ygidia are scantily and microscopically punctulate, 

 the propygidium is margined anteriorly with a rine stria, 

 and the pygidium at its apex has a series of longitudinal 

 grooves, about 2-4 in all, tiiese constitute a well-marked 

 character and may be sexual ; the prosternum, the striie are 

 didymous and widen out behind the coxa3 and in front the 

 two parts of each stria join ; tiie mesosternum has a marginal 

 stria along its edge and behind it there is a transverse stria 

 which is sinuous in the middle; the tibiae are disciform, the 

 anterior pair are minutely serrate on the outer edge and 

 markedly emarginate on the inner edge at the tarsal end. 

 D. arechavalehc, ]\Iars., is similar but larger, and has a third 

 dorsal stria and the -1-6 very short and apical. The oblique 

 thoracic striio resemble those of Renimus ineticulosus^ Lew., 

 and if more species of Discoscelis and Renimus are at any 

 time detected the genera may require revision. 

 Hub. Tucuman, Argentina. 



Abrceus orientalis, sp. n. 



tSuborbicularis, convoxus, piceus, opacus, ruguloso-punclatus, supra 

 setulis creetis tiavesccntibus ; prosteriio basi couspicuo puuctato; 

 nicsostcrno stria marginali late interrupta ; mesosteruo meta- 

 steruocpie subocellato-punctatis ; tibiis obscure rutb-brunneis. 



L. \l mill. 



Circular in outline, convex, rugosely punctured and setu- 

 lose above ; the head slightly impressed anteriorly ; the pro- 

 sternum straight at the base, narrowly marginate anteriorly, 

 with an extremely fine stria behind the marginal stria, across 

 the middle there is a feeble ridge and behind the ritlge the 

 j)unctures are very distinct aiuJ arranged in two rows, anterior 

 to the ridge the i)unctures are irregular and inconspicuous, 

 l)asal margin narrowly smooth not striate ; the mesosternum, 

 marginal stria widely interrupted and the punctures, wdiich 

 are similar to those of the metasternum, are in t'.\o irregular 



