ANALYTICAL TABLES. 201 



I— First svibmargiual cell not receiylng a recmrent nervure. 

 J— Petiole of the abdomen depressed and generally furrowed 

 above; flagellnm thickened at the apex; intermediate 



tibiae with one apical spur (Mimesidae.) 



JJ— Petiole of the abdomen cylindrical, smooth; flagellum 

 slender at the apex: Intermediate tibi^ with two apical 



spurs (Sphecidffi.) 



II— First submarginal cell receiving a recurrent nervure. 



(MellinidiE.) 

 GGG— Anterior wings with only one complete submarginal cell. 



(Crabronidae.) 



FF — Prothorax considerably produced posteriorly, the hinder angles 



reaching the tegulae ; female sometimes wingless. 



G— Abdomen with the first ventral segment not separated from the 



second by a furrow or constriction of the joint. 



H— Posterior legs long, reaching beyond apex of the abdomen; 



eyes not emarginate within (Pompilldae.) 



HH— Posterior legs short, not reaching to the tip of the abdomen; 



eyes emarginate within (Sapygid^.) 



GG— Abdomen with the first ventral segment distinctly separated 

 from the second by a constriction or furrow. 

 H— Intermediate tibiie with one apical spur; female winged. 



(Scoliidae.) 

 HH— Intermediate tibiffi with two apical spurs ; female wingless. 



(Mutillidie) 

 DD — Petiole of the abdomen with one or more scales or nodes ; three sexes, 

 or kinds of individuals. 

 E— Petiole composed of a single joint. 

 F — Abdomen proper not constricted between segments one and 

 two. 



(Formicidae.) 

 FF— Abdomen proper constricted between segments one and two. 



(Poneridae.) 



EE— Petiole composed of two joints (Myrmicidaa.) 



BB— Anterior wings without complete or closed submarginal cells. 

 C — Abdomen sessile, a little longer than the head and thorax, composed 

 apparently of only 3 to 5 segments, the remainder modified into a slen- 

 der, retractile, telescopic apparatus, generally not exserted ; antennae 

 elbowed, short; body adorned with metallic colors, and often coarsely 



and deeply sculptured (Chrysldid^.) 



CC — Abdomen petiolate, of the female very long, at least 5 times as long as 

 the head and thorax; antennae long, thread-like, not elbowed; body 



black, smooth and polished (PeleclnidsB.) 



AA— Posterior trochanters two jointed. 

 B— Abdomen .sessile or petiolate, united to the thorax by a portion only of its 

 transverse diameter, the articulation movable. 

 C — Anterior wings almost veinless, without closed or perfect cells. 

 D— Posterior margin of prothorax reaching the tegulae ; ovipositor arising 



from the apex of the abdomen (Proctotrupldae. ) 



DD — Posterior margin of the prothorax not reaching the tegulae; oviposi- 

 tor arising before the apex of the abdomen (Chalcididae.) 



CC— Anterior wings with several closed or nearly closed marginal or sub- 

 marginal cells. 

 D — Anterior wings with a costal nervure and a more or less developed 

 stigma. 

 E — Abdomen attached to the extremity of the metathorax. 



F — Anterior wings with but one recurrent nervure (Braconidae.) 



FF — Anterior wings with two recurrent nervures (Ichneumonidae.) 



EE — Abdomen inserted upon the dorsum or near the base of the meta- 

 thorax (Efaniidse.) 



DD— Anterior wings without a costal nervure or stigma; abdomen gen- 

 erally ovate, and more or less compressed (Cynipidae. ) 



BB — Abdomen connate, united with the thorax by the entire diameter of the 

 basal part, the articulation not movable, 

 C— Anterior tibiae with one apical spur; abdomen of the female furnished at 



the tip with a borer , (Urooeridas.) 



CC— Anterior tibiffi with two apical spurs ; abdomen of the female furnished 

 at the tip with a pair of saws (Tenthredinidae.) 



