MONOGUAPH OF THE NORTTI AMERICAN PROCTOTRVI'ID.E. 375 



ceuco, the scape reaebing beyond the (K-elli, the i)e«licel small, aimuhir, 

 or rouiide<l, the first tlajiellar Joint k'iigtlu*ue<l, excised one third its 

 leu^ith at base, the following joints shorter, the terminal joint nsnally 

 shorter than the second. 



Mandibles short, arcnated. 



Thiu-ax snbovoid, tlie i)ronotam distinctly visible from above, some- 

 times hMigthcne<l, nariowed bctbrc; inesonotuni with L* dcei> farrows; 

 scntellnm snbconvex or flattened, Avith a large fovea at base; in<'tatho- 

 rax short, carinated, the postcriin* angles prominent or acnte. 



Front wings pubescent, with a distinct basal cell and a short, open 

 marginal cell; the marginal vein is nsnally very short; the tirst branch 

 of radins short, obli(|ne, with a slight nncns from tlu^ tip; 5 sometimes 

 apterons or subapterous. 



Abdomen ovate or conic, the iM'tiole longer tlian thick, a litthi swollen 

 in the middle. 



Legs ]>nbescent or pilose, the femora clavate, the tibia> elavate or 

 snbclavar*', tibial s[)nrs short but distinct, the basal joint of hind tarsi 

 3 or more limes longer than the second. 



TABLE OF SPECIES. 



Species black, or at least not eutiroly rufons or brownish 2 



Species entin^ly brownish or rufous. 



Aiit»'!iii;i' and lc;is ]iah' brownish-yellow, the former iuerassated towiird tips, 

 the iirst llaji,elhir, joint not lon.ner than the pedicel hut niueli slen- 

 derer, the joints beyond n\oiiiliforin, jjradually increasing in size. 

 Three terminal Joints pale; pcdit'el much stouter bnt not longer than thc^ lirst 



llagellar joint A. isfi'A, up. nov. 



Three terminal joints Idack; i)ediecl stouter and distinctly longer than the 

 first tla;>,;llar joint A. KCFKscen.s, sp. nov. 



2. Abdomen entirely bla>k or only slij^htly palo at tip 3 



Abdomen brownish or rufous, or at least toward the biise. 



Antenna' int^rassated toward tips, mouilitorni, the first tlagellar joint longer 

 than the jiedicel. 

 Metathorax, petiole, and abdouien rufous, the second segment piceous J ( <? ab- 



domei' except the pciiole black) A. uitoi'ktioi.ata. sp. nov. 



Metathorax always black, the second abdominal segment alone rufous. 



Antenn.e and legs pale brownish-yellow, the first tlagellar joint as long as 

 the scape, (excised basally for two-thirds its length J . 



A. MISSOI'RIKNSIS, sp. UOV. 



3. Antenr.a* and legs rufous or brownish-yellow. 

 Antenna' incrassated toward tips, sub-nioniliform. 



Fi'st tlagellar joint notlonger than the pedicel but slenderer. .A. r<»!.ieA, s]>. nov. 

 First flagellar joint a little longer than tht^ pedicel an<l as thick, the following 

 joints trausverse-moniliform. 

 A ulomen bluntly rounded at tip, the petiole stout, rng<»se. 



A. UUliOSOPKTIOLATA, Sp. noV. 



Anti'nate tiliform-nioniliform. 



First flagellar joint twice the length of the pedicel; the joints after the fourth 

 transverse, the last conicai. twiire as long iis the penultimate. 

 Abdomen oblong-oval A. calikornica, sp. nov. 



