. ; , TABLK OF FAMILU». 11 



11. — Anterior wiii^H without complete or closed MiibiiiarKinnl cells 12. 



Ajiterior winjfs with at least one dosed and coin|)lete Hnhniar){inal <'cll...l3. 



V2. — Alnlomen pi-tiolato, of 9 very long and slender, cylindrical, at least five 



times longer than the head and thorax, much sliorter aixl clavate in % ; 



antenniii long, not elhowed, thread-like ; IxMly .smooth and |M)li!ihe(l, hiack. 



PELECINIDiE. 

 AlMtonien sessile, a little longer than the head and thorax, composed ap- 

 parently of only :{-.') segnients, the remainder modified into a slender, 

 cylindrical, retractile, telest^opic- formed apparatus, generally not e.x.serted ; 

 antennie elbowed, short; IxKly adorned with metallic colors, and often 



coarsely and deeply sculptured.— Tubulifera CHRYSIDIDiE. 



1,3. — Posterior tarsi with the ba-sal joint more or less cylindrical, never much 



widened or densely pubescent 14. 



Posterior tarsi with the basal joint more or less compressed and dilated and 



densely jjubesceut beneath, rarely suIm ylindrical.-Anthophila 32. 



14. — Petiole of abdomen with one or more scales or nodes; three sexe.s, '^ 9 and 



5 . — Heterogyna 13. 



Petiole of abdomen simple, without s<ales or ncMles ; two sexes, % and 9 .-IH. 



15. — Petiole comjiosed of a single joint 16. 



Petiole comitosed of two joints MYRMICID^. 



16. — Ab<lomen i)roper <-onstricted between segments 1 and 2 PONERID.^. 



Abdomen jirojier not constricted between segments 1 and 'i 17. 



17. — Insertiim of mandi))les distant. 



Clypeus always di.stinct and often very large; petiole of abdomen almost 



always surmounted by an erect scale FORMICID.^. 



Clypeus very small or indistinct; % abdomen long .subcylindrical, petiole 

 depres.sed, nodiform ; ( 9 smd S not positively known j...DORYLID^. 



Insertion of mandibles contiguous ( g 9) ODONTOMACHID.*!. 



18. — Wings not folded longitudinally.— Fossoreg 19. 



Wings more or les.s folded longitudinally in repo.se. — Diplopteryga 30. 



1!). — Prothorax considerably produced posteriorly, the hinder angles reaching 



the tegulie; 9 sometimes apterous 20. 



Prothorax usually consisting of little more than a narrow collar, the poste- 

 rior angles not reaching the tegulie; 9 never apterous 23. 



20 — Abdomen with the first ventral segmetit distinctly separated from the second 



by a more or less deep cou.striction or furrow 21. 



Abdomen with the first ventral segment not separated from the second by 



a furrow or constriction of the joint 22. 



21. — Intermediate tibia; with two ai)ical spurs, their coxte contiguous or but little 



separated ; 9 apterous MUTILLID^. 



Intermediate tibiae with a single apical spur, very rarely with two. their 



coxse, as a rule, widely separated ; 9 winged SCOLIID.^. 



i. — Posterior legs short, not reaching to the apex of the abdomen ; eyes emar- 



ginate within SAPYGIU-Sj. 



Posterior legs long, reaching beyond the apex of the abdomen ; eyes not 



emarginate within POMPILID^. 



'i. — Anterior wings with three complete .submarginal cells 24. 



Anterior wings with two complete submarginal cells 29. 



Anterior wings with only one complete and distinct submarginal cell. 



CRABRONID^. 



