46 Journal New York Entomological Society. [Voi. vil J 



'] 

 menid?e, Masarid^e, Chrysididre, Bethylidje (part of the Proctotrypidae, 

 which I now consider a distinct family), Trigonalidce, the new family 

 Cosilidse, and to the separation of the families Myzinida; and Tiphii- 

 dte, from the old family Scoliid^. The superfamilies recognized may 

 be thus distinguished : 



Table of Supcrfainilies. 

 Suborder I. Heterophaga. Abdomen petiolate or subpetiolate, never broadly sessile ; 

 larvag apodous. 

 * Hypopygium entire and closely united with the pygidium, the sting or ovi. 

 positor when present always issuing from the tip of the abdomen. 

 a. Pronotum not extending back to the tegulae. 



b. Tarsi dilated or thickened ; pubescence of head and thorax feathery 

 or plumose Superfamily I. APOIDEA. 



bb. Tarsi slender, not dilated or thickened, pubescence of head and 



thorax simple, not plumose Superfamily II. SPHEQOIDEA. 



aa. Pronotum extending back to the tegulie, or the latter absent. 



c. Trochanters always one-jointed. 



d. Abdomen variable, rarely twice longer than the head and 

 thorax united, most frequently much shorter ; hind tibiae 

 in 9 neither inflated nor strongly constricted at base. 

 Petiole or first segment of abdomen simple, without a scale or 

 node ; winged forms with well developed tegula;. 



Superfamily III. VESPOIDEA. 



Petiole or first segment of abdomen composed of one or two 



scales or nodes ; winged forms without or with imperfectly 



formed tegulre Superfamily IV. FORMI OIDEA. 



dd. Abdomen in f greatly elongated, several times longer than 

 the head and thorax united, the segments constricted at sutures 

 and flexible ; hind tibii^ inflated and strongly constricted at 

 base ; abdomen in $ clavate. (pars) ( Family Pelecinida?) 



Superfamily V. PROCTO 1 RYPO<DEA. 

 cc. Trochanters two-jointed. 



Superfamily V PROCTO TRY POIDE A. 

 ** Hypopygium divided or never united closely with the pygidium, the ovi- 

 positor issuing some distance before the tip of the abdomen ; trochanters 

 always twc-Joifited. 

 d. PVont wings always without a stigma, the marginal vein, if present, 

 linear, never large or stigmated ; abdomen with the ventral seg- 

 ments hard and chitinous, without a fold. 



e. Pronotum extending back to the teguloe ; front wings with a mar. 

 ginal and a basal cell, either complete or incomplete ; antennre 



straight, not elbowed Superfamily VI. CYM OiDEA. 



ee. Pronotum not extending back to the tegulse ; front wings with 

 neither a marginal cell, nor a distinct basal cell, the latter, if at all 

 indicated, usually poorly defined by hyaline veins, visible only by 



