34 Cameron, Hymenoptera Orientalia. 



more broadly behind. Clypeus, labrum, mandibles, and 

 palpi yellow; the mandibular teeth black. Thorax black, 

 a broad band on the pronotum and the tegulse lemon- 

 yellow. Mesonotum opaque, closely punctured; the furrow 

 on the middle lobe distinct. Scutellum pyramidal ; more 

 strongly punctured than the mesonotum, the middle 

 stoutly keeled throughout, the basal and apical (or lower) 

 part of the keel separated by a curved depression. Pleuree 

 opaque, closely and uniformly punctured ; the sternum 

 closely punctured, finely furrowed down the middle ; the 

 sides bluntly margined. Abdomen entirely black, without 

 any yellow ; the back with a distinct violet -blue tinge, 

 smooth and shining. Legs straw-yellow ; the apex of the 

 four anterior femora above, the four anterior tibial behind, 

 all the tarsi and the hinder knees and tibiae, black ; the 

 patellae are distinct ; the claws are biiid. 



Pachyprotasis VIOLACEIDORSATA, Sp. nov. 



Flava, supra nigra; tibiis tarsisque anterioribus postice, 

 apice femoruni, tibiis tarsisque posticis nigris; alis hyalinis, 

 stigmate na^visque nigris. $ . 



Long. 8 mm. 



Antennae black, the scape yellow beneath ; the vertex 

 and the greater part of the front above, and the occiput, 

 black ; on either side of the vertex is an oblique yellow 

 mark, triangularly narrowed on the lower side and 

 touching the eyes ; the apex of the labrum almost trans- 

 verse. The upper part of the body black, except the 

 apex of the middle lobe of the mesonotum, a mark 

 between it and the scutellum, the scutellum and post- 

 scutellum ; the sides and under surface pale yellow, except 

 the upper part of the pronotum and of the mesonotum, 

 except at the apex ; there is a small black mark on the 

 sides of the mesosternum. The four anterior tibiae and 



