!)(j GENERA OF HYMENOPTERA. 



2. — Antennfe inserted as near, or even nearer, to middle of frontal earin.p than 

 to their anterior extremity, and distant from jiosterior edge of elyjieus; 

 clypeal fovese separated from autcinial fovea'; frontal area indistinctly 

 defined, iiiiudi hroadi'r than long; scale thick; wings without discoidal 



cell 3. 



Antennae inserted toward anterior extremity of frontal carinie, at or verj- 

 near po.sterior edge of clypeus; wings witli or without discoidal cell. ..4. 

 3. — Clypeus trajjezoidal, its lateral margin diverging in front where they reach 

 the lateral angles of the head ; antennfe long, with first joint of funicle 

 scarcely larger than the second ; frontal carina' sinuate, scarcely diver- 

 gent C'aiiipAiiotus* Mayr. 



Clypeus almost square, only slightly broader at the anterior angles, wliich 

 do not reach lateral margin of the head ; antennjc short, first joint of 

 funicle thickened at apex, twice as long and as thick as the following 

 joints; frontal carina; sinuous, strongly diverging behind. 



C.'<>Iol»<>i>!«iN .Mayr. 

 4.— Antennie 10-jointed ; mandibles not dentate, acute at tij) ; mest)thorax gib- 

 bous, prolonged anteriorly; scale of petiole small: external genital 

 valves triangular, broad, short, rounded at tij); wings without complete 



submarginal cells I$raeli.>iii.yriiie.\ Mayr. 



Antennie 13-jointed 5. 



."). — Clypeal fovese not united to antennal fovea'; ;inlenn<e inserted very near 

 the clypeus, but not touching its posterior nuirgin; scale thick; mandi- 

 bles not toothed ; external genital valves very narrow. 



I'roiiolepij* Mayr. 

 Clypeal fovete united to antennal fovese; antennie inserted on posterior 



margin of clypeus 6. 



(i.— Mandibles broad, flat, with apical margin dentate or simple ; anterior mar- 

 gin of clyi)eus convex, prolonged 7. 



Mandibles i-ylindrical, short, narrow, acute at tip, without a])ical margin 

 and without teeth; clypeus triangular, rounded at base, convex, its an- 

 terior margin straight and not prolonged; scale vertical, thick, (luiul- 

 raugular, emarginate above: wings with one discoidal cell. 



I'olj orgus J^atr. 

 7. -Frontal area indistinct; external genital organs very small; lirst joint of 

 funicle thicker than second; size small, much inferior to that of f . 



Lia!>»ill!>> Fabr. 

 Frontal area sharply defined ; external genital organs large; first joint of 

 funicle usually not thicker than second ; size large, very little less than 

 that of 9. 

 Abdomen rattier depressed above; wings extending beyond apex of abdo- 

 men ; discoidal cell large, rarely wanting; first joint of funicle one- 

 third shorter than second ; thorax slightly enlarged laicially at middle : 



jirothorax somewhat transversely convex F4>rilli<'3i Linn. 



.Vbdomen cylindrical, not depressed; wings .short, not exceeding the ab- 

 domen ; discoidal cell small or wanting; first joint of funicle as long 

 as second ; thorax compressed laterally and of a moderately unilbrm 

 size; prothorax slightly concave, transverse medially. 



!VI,Vi*iiioco<\vm1iim Wesm. 



