Geneva and Species of Hymenoptera. 505 



shaped mark on the front, the eye-incision, and the posterior 

 orbits yellow. Vertex closely, the front somewhat more 

 widely punctured. Clypeus wider than long, its sides 

 roundly curved; the apex with a shallow incision. Miu- 

 dibles yellow, the apex broadly rufous. Thorax black ; a 

 broad mark on the sides of the pronotum (the two almost 

 touching), the tegulae, a large mark un ler the tegulas, the 

 scutellums, and the sides of the median segment broadly, 

 yellow. Pro- and mesothorax closely and strongly punctured, 

 the upper basal slope of the pronotum, the base and apex of 

 the mesopleurae, the base of the metapleura?, and the middle 

 of the metanotum smooth ; the punctuation on the median 

 segment is slight, its centre is broadly and slightly hollowed 

 and is keeled down the middle. Legs yellow; the anterior 

 coxae entirely, the four posterior behind, the anterior femora 

 at the base behind and the posterior entirely (except at the 

 apex), black; the four posterior tibiae are marked with black 

 behind. Wings fuscous-hyaline, the apex violaceous ; the 

 second cubital cellule much narrowed above, scarcely one 

 fifth the length of the third. Abdomen black; the apical 

 half of the petiole broadly at the nodes and the apex entirely, 

 a large irregular mark (wider than long) on the sides of the 

 second segment, its apex broadly, widest in the middle, the 

 apex of the third to fifth, and the sixth broadly in the middle, 

 yellow. On the second segment beneath are two yellow 

 marks ; its apex and that of the third broadly yellow. 



The male is similarly coloured ; there is less black on the 

 legs ; the yellow mark on the front is prolonged between the 

 antennae as a short streak; the flagellum is black, except 

 at the apex ; the yellow on the scutellum is narrowed and 

 incised in the middle. 



Odynerus Antoni, sp. n. 



Niger, dense albo-pilosus ; basi clypei, linea prouoti lineaque abdo- 

 minis segmentis 1° et 2° rufis ; alis fusco-violaceis. £ . 

 Long. 7 mm. 



Hah. Barrackpore {Rothney). 



Antennae entirely black, except the apical claw, which is 

 brownish ; it is thick and reaches to the base of the eleventh 

 joint. On the head, the base of the clypeus broadly, a mark 

 between the antennse, and a small mark behind the eyes are 

 brick-red ; the front and vertex are closely and strongly 

 punctured and covered with long white hair ; the keel between 

 the antennas is stout. Clypeus roundly convex, sparsely 

 punctured, thickly covered with white, somewhat depressed 

 pubescence; its apex depressed and slightly roundly incised 



