MONOGRAPH OF THE NORTH AMERICAN TROCTOTRYPIDJi. 303 



MAI.KS. 



Mosoiiotnm with ilui furrowH complete 5 



Mc'Hoiiotmii with iiiiTows indicatid only ])OMt<'ii(»rly 3 



MeHoiiotuin without trace of liiiiiiwH or tho faiute.st tr.Hti i)08tcri<»rly, 



V«rt»'x not or very faintly trannverMely aciciiluttsd — ... 2 



Vortt'x trausverscly iiciculated or striatt'd posteriorly, 

 t'oxn' black. 

 Logs black or brown-black. 



Antcunic black; i>c<licel lon;:<T than thti lirHt two funiclar jointH; first fuui- 

 darjoint very minute close to thoHecontl; the second as with'aslonj;; 

 third narrow, a little lon<.;er than thiek; the fourth transverse, 



smaller than the first club joint P. salicicola. 



Cox»5 rnfo-i>icoou8. 

 Legs dark rufo-i)ieeous, tarsi honey-yellow, femora and tibia- dnsky at the 

 middle. 



Scape Idack, flanellum dark brown P. 8t)Mi)A»;iNi.H. 



Antenna- brown-black; pedicel about as long and thick as the s(-cond funi- 

 clar joint; club H-joint oval-uioniliforni, slightly jiodicellate, hairy. 



P. l«ACCIIAKI('0|.A. 



Antenna) dark brown ; pedicel almost as long as three funiclar joints united ; 

 first funiclar joint niinutt;, close to the second; the second twice as 

 long as the first; the third half the length of fourth; first three 

 club joints e<|ual, oval, the last conic, narrower and longer than the 

 preceding P. diplosiuis. 



Legs rufous, tlui tarsi ])ale. 



Antenna- brown ; pedicel about as long as the first two funiclar joints united; 

 the first funiclar joint minute, closely nnite<l with the second; the 

 second subtriangular or twisted, dilated towards one side; club 

 6-jointed, oval-mouiliforni, slightly pedicellate, hairy.. P. pinicola. 



2. Coxas black. 



liCgs dark brown, tarsi whitish. 



Pedicel a little longer than th'; leccmd funiclar joint, the first very small ; club 

 6-jointed, the joints, except the last, moniliform, the last cone- 

 shaped, nearly twice as long as the preceding 1'. proximus. 



Legs black. 

 Pedicel as long as the second funiclar joint ; first funiclar joint sm.nll, rounded ; 

 the second shorter than the first dul) joint; club 6-jointed, the 

 joints, except the last eijual, a little longer than thick, the last long 

 fusiform, thicker, and twice as long as the preceding, .P. ASYNAPXi^F'. 

 Coxa- pale or brown ; antenna' dark brown. 

 Legs brownish-yellow, posterior femora dusky. 

 Pedicel as long as the first and second funiclar joints united; the tip yellow; 

 first joint of fuuicle verj' minute, the second a little curve»l; club 

 6-jointed, a little thickened toward apex; the joints, exce])t the 

 last moniliform ; the last conic, nottwiee as long as the preceding.. 

 ., , 1 . -^ P. ACTINOMKKIUIS. 



3. CoxfB brown or rufo-piceous 4 



CoxiB black. 



Vertex posteriorly transversely aciculated. 

 Legs and antennie black, tarsi pale. 

 Pedicel as large as the first and second funicle ioints together, the first 

 small, rounded, the secimd wider than long, a little dilated towards 

 one sifle, club 6-jointed, the joints oval, gradually increasing in size, 

 loosely joined, hairy, the last fusiform, twice as long as the pre- 

 ceding , P. STKIATICEPS. 



