375 



black, tinged with violaceous, the nervures and stigma black. Apex 

 of middle lobe of mesonotum bordered by 3 stout keels, the central 

 longer and stouter than the others. Metanotum strongly punctured. 

 The punctures round and clearly separated, the sides at the apex 

 projecting into broad, short, rounded tubercles. Basai 3 abdominal 

 segments striated, the striae becoming gradually finer, the apex of 

 the 3 rd smooth. Basai spine on hind coxse long, curved, stout, the 

 lower short, about twice longer than it is wide at the base. Legs and 

 apex of abdomen densely covered with longish white pubescence.Ç. 



Length 12 mill.; terebra 4 mill. 



Dima, 15 th September (A. Koller). 



Rinamba gen. nov. — Head cubical, margined behind, the 

 temples broad; the front not depressed, the ocelli in a dépression, 

 as near to the antennse as to the occiput. Glypeus trans verse. Man- 

 dibles wide, bidentate. Malar space nearly as long as the eyes. 

 Antenme placed shortly above the lower part of the eyes. Par- 

 apsidal furrows distinct; there is a crenulated mesosternal furrow. 

 Wings with 3 cubital cellules; the radius issues from shortly 

 beyond the middle; the nervellus widely post-f urcal ; the récurrent 

 nervure is received in the l st cubital cellule, at almost the length 

 of the l st transverse cubital from the apex; anal nervure inlersti- 

 tial. Legs stout, the femora, and especially the hinder, thickened; 

 the spurs minute. Abdomen sessile, longer than the head and 

 thorax united, slightly vvider than it, the basai and apical segment 

 narrowed, the others of equal width; the basai segment longer 

 than wide, the 2 nd almost square, both opaque, finely rugose. Ovi- 

 positor longer than the body. 



I can only refer this genus to the Helconinœ; it wants, however, 

 the deep frontal dépression of the Helconini, while from the Dio- 

 spilini it differs in the abdomen being distinctly longer than the 

 head and thorax united. It will probably form a new Tribe. 



Rinamba opacicollis sp. n. — Black, the tibise fuscous, 

 paler at the base and apex, the tarsi pale testaceous, the apex of 

 coxa5 and the trochanters fuscous; palpi fuscous; wings hyaline, 

 iridescent, the nervures and stigma black. Mandibles and lower 

 part of the malar space rufous. Ç. 



Length 4 mill.; terebra 5 mill. 



Dima, 22 nd September (A. Koller). 



Face and oral région opaque, closely rugosely punctured; the 

 centre of the front finely longitudinally striated; the lower closely, 

 rather strongly striated, smooth on the inner side below. Prothorax 



