,S GENERA OF HYMENOPTERA. 



|>arasitic!illy iiimii otiur living inserts; this subsection is subdivided 

 iiitti tw<» divisions, the first of wliioh, the Spiculifera, having the ab- 

 tiuiiHii I'urnished with a plurivalve oviduct and containing the fami- 

 lies i'liiiip'uhr, Evtmiiihe, Ichnemnonidce, Bmconiche, Chalcididte and 

 Proctofnipidiv. The second division, termed the Tubulifera, having 

 the extremity of the abdomen tubular and retractile, and furnished 

 with a minute stin<r, the larvae feeding Uinni the larvas of other hv- 

 meniiptera, or upon dead or paralized insects deposited by the parents 

 of such larvae for the sui)port of the latter, and containing the single 

 family Chn/xididtp. 



The second Section — Aculeata — is divided into two subsections, 

 viz.: Prajdones (including the Heterogyna, Fossores and Diplop- 

 tervga ) having the basal joint of the posterior tarsi cylindrical, not 

 dilated, nor formed fur collecting pollen, the larvte feeding upon 

 other insects stored up, or ui)on animal or vegetable fluids provided 

 l)v workers, and containing the families Crabronidce, Larridce, Bem- 

 bfcid(H, Sphecidce, Scoliidce, Muilllidcp, Fonnicidce and Vespidce. The 

 second subsection, the Mellifera ( Anthophila Latr.), having the basal 

 joint of the j)<)Sterior tarsi dilated and pollinigerous, the larvae feed- 

 ing upon honey or pollen paste deposited by the parent, or collected 

 by workei-s, and containing the families Andrenidie and Apmhe. 



The arrangement followed in this Synopsis is similar to that })ro- 

 jiosed by Dr. Hartig (in Wiegmann's Archiv. 1837, No. 2\ and 

 agrees somewhat with the above, except that the two principal divi- 

 sions are founded upon the structure of the trochanters. 



The following table will serve to distinguish the different series : 



Table of Series. 



TrorhniiterH iwo-jointed. — Hym. ditrocha. 

 AlKloincn coiiiiatt' witli tlic llnn-iix. 



Anterior tibiie with two apical spurs PHYLLOPHAGA. 



Anterior tibiii' with one ai)ieal spur XYLOPHAGA. 



Alxloiiieii sessile or petiulatc PARASITICA. 



Trochanters oue-jointal.- -'Kym. monotrocha. 

 Hasiil joint of posterior tai"si (•yliiidrieal. 

 .Vpicai scjinientsofalKlomen tiii)ular, retractile, telescope-likt.. TUBULIFERA. 

 Aj)ieal se^nients of abdomen not so formed. 



I'etiiili- (if al)dniiien with one or more scales or nodes; sexes Ilini' ^95?' 



HETEROGYNA. 

 Petiole of alidiimen simple, without scales or nodes; sexes two, % and 9- 



Winjis not f.dded lonnitudinally FOSSORES. 



Wines folded longitudinally in rei><>.se DIPLOPTERYGA. 



Iia.sal joint uf posterior tarsi ahiii).-<t always more or le.ss dilated and dmsely 

 pul.esrent ANTHOPHILA. 



