X64 SMITH ON HYMENOPTEllA OF AHU ISLANDS. 



Our example of this species slightly diifers in coloration from the 

 description of Saussure. He says, " black, with the vertex, the front, the 

 prothorax, and the border of all the segments of the abdomen, except 

 the first, yellow ; the wings yellow ;" in the Aru specimen, the sinus of 

 the eyes, a spot above the clypeus, a reversed crescent-shaped spot 

 crossing the ocelli, two oblique spots behind them, and a broad elongate 

 stripe behind the eyes yellow. These slight differences cannot charac- 

 terize more than a variety ; in every other particular they exactly cor- 

 respond. 



Gen. Odyneeus, Latr. 



1. Odynerus petiolatus. O. niger; clypeo apiculato; capite, 

 thorace abdomineque flavo variis ; abdomine petiolato ; alis sub- 

 hyalinis. 



Female. Length 7i lines. Black ; head' and thorax strongly punc- 

 tured ; two confluent spots between the antennae, a line on the inner 

 orbits of the eyes, terminating in their emargination, an oblong spot 

 behind them, a spot at the base of the mandibles, the scape in front, 

 and the clypeus yellow ; the latter with a large black spot in the 

 middle, and with its anterior margin prolonged into an acute point ; 

 the mandibles ferruginous, with their base and margins black ; the 

 flagellum fulvous beneath. Thorax : an interrupted line on the collar, 

 a spot beneath the wings, the outer margin of the tegulse, two spots 

 on the scutellum, two longitudinal curved lines on the metathorax, 

 extending from the base to the apex, yellow ; the yellow lines on the 

 metathorax curving inwards. The tibiae, tarsi, and apex of the femora 

 ferruginous ; the intermediate and posterior tibiae with a fuscous line 

 outside, a spot on the coxae outside, a stripe at the apex of the anterior 

 femora beneath, another on the intermediate pair, and a line on 

 the anterior tibiae, behind, yellow; wings subhyaline, their margins 

 fuscous. Abdomen petiolated ; a fascia on the apical margins of all 

 the segments, and the petiole, yellow ; the third and following fasciae 

 narrowest ; all the fasciae continued beneath the abdomen. 



Hab. Aru. 



2. Odynerus agilis. 0. niger ; capite thoraceque distincte, abdomine 

 delicatule punctatis ; pedibus ferrugineis ; abdominis segmentis du- 

 obus basalibus flavo fasciatis ; alis subhyalinis. 



Male. Length 6 lines. Black ; the scape in front, a line on the inner 

 margin of the eyes, terminating in their emargination, an abbreviated 

 line behind them, and the clypeus yellow ; the latter deeply emargi- 

 nate, forming two teeth. Thorax : a line in the middle of the ante- 

 rior margin of the prothorax, two spots on the verge of the emargina- 

 tion of the metatliorax, and a fascia on the apical margins of the first 

 and second segments of the abdomen yellow ; the legs ferruginous ; 

 the wings subhyaline, the anterior margin of the superior pair fuscous ; 

 the outer margin of the tegula; yellowish. 



Hab. Aru. 



