No.i20t;. [CHXFA'MOX I'l.l ES—AsHMKA D. 45 



4. Pt'tiolt" of alxloineii longer and sIi'ikKmcp, only sliglitly ami gradnally widened 



toward ai)ex, not elbowed, the ^jjiraclehi clos^er to eaeli other than to the 



apex; areolet usnall y somewhat larger, quadrate 5 



I'etiolcof abdomen shorter, bent or ell)()we(l and nnich widened at apical third, 

 the spiracles u.sually widci- I'mtn cacli otiicr thai to the apex; an-olet 

 f^maller. 

 Head a little wider tlian the tiiorax; areolet elo.^ed. 



(27!)) .Vc'.so.s/t'Jioic/cMS Ashmead, new genus. 

 (Type, .Vesostenus (tUxnnaculalus Cresson.) 

 Head scarcely so wide as the tiiorax, or no wider; areolet open behind. 



(280) Chrutolia Brulle. 



5. ]VIet,ai)leural carinas distinct to the base of the hind coxaj; transverse median 



nervure in liind wings obtusely angularly broken by the subdiscoidal 

 nervure near its basal third; scntellum margined at sides only 



anteriorly ( 281 ) Cnjptavnra liruUe 



Metapleural carina' wliolly wanting or at Unist not extending beyond the first 

 transverse carina; transverse median nervure in hind wings straight, the 

 subdiscoidal nervure originating from its basal fourth. 



(282) Brachycorj/jihus Kriechbaumer. 



6. Metathorax short, \\'ith only one transverse carina — the basal; hind legs mucii 



longer than the middle and anterior pairs; areolet open behind. 

 (283) Crypturopsls Aslimead, new g<inus=Criiptvriii< Ashmead nee Graven- 

 horst. 



(Type, Cvjiphiriix icxduuti Xalwixdixd.) 



7. Head with only o»/' spine or acute carina lietween the antennae; mesonotum 



trilobed. 

 Metathorax with the ajsical transverse carina wanting or subobsolete, the 

 upper liind angles prominently toothed 'or spined; abdomen ?'•///( ««< 



thyridia between segments 2 and 3 (284) Polijcyrtus Spinola. 



Metathorax with the apical transverse carina distinct, prominent, the upper 

 hind angles at most subdentate; alxlomen vHh. thyridia between seg- 

 ments 2 and 3 (285) Listrognalhux Tischbein. 



Head with two spines or acute carina' between the antenna^; mesonotum not 

 trilobed ( 286 ) Polyamus Cresson. 



SuLbfkrriily III. I'lMPLIHSTJE. 



1859. Pimplarin' Holmgren, Ofvers. Vet. -Akad. Forli., XVI, i)p. 121-132. 



1887. Pimplina:, Subfamily, Cresson, Syn. Hym. North America, [). 4!i. 



1888. Pimplariie Thomson, Opus. Ent., XII, p. 1247. 



1895. P!mj)linx, Subfamily VI, Ashme.vd, Proc. Ent. Soc. Wash., Ill, }>. 278. 

 1900. Pitnplinie, Subfamily III, Ashmead, Smith's Insects of New Jersey, p. 571. 



The spt'cies fulling- in this .subfamily are I'oadily distinguished from 

 tho,s(> pnniou.sl}' treated of l^y the ehiiractcrs made use of in my ta])le 

 of ,su])families — the shape of the a])domen. the shape of the tii'st seg- 

 ment of the abdomen and the position of its spiracles, and the vena- 

 tion of the front wings. 



The al)domen is elongate, sid)eylindrieal or depressed, rarel}^ sub- 

 compressed at apex, most frequently sessile, morc^ rarely petiolate and 

 always with a prominent ovipositoi"; the first segment is straight, 

 rarely bent or curved, as in the TclDiexmoii'nut' and the Oryj)ti)ifc., and 

 with the spiracles, except in two or three cases, placed at or before 



