MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 303 



MALES. 



Mesouotniii with tlio furrows coiupleto 5 



Mesouotum with furrows iudicati'il ouly ])osteriorly 3 



Mesouotum without trace of fuiTows or the faintest trare posteriorly. 



Vertex not or very faintly transversely aciculated . 2 



Vertex transversely aciculated or striated posteriorly. 

 Coxaj l)lack. 

 Legs black or brown-black. 



Antenna* black; ]>edicel longer than the first two funiclar joints; first funi- 

 clar joint verj' minute close to the second ; the second as wid(i as long; 

 third narrow, a little longer than thick; the fourth transverse, 



smaller than the first club joint P. salicicola. 



CoxiB rufo-i)iceous. 

 Legs darlc rufo-piceous, tarsi lioney-yellow, femora and tibia- dusky at the 

 middle. 



Scape black, flagellum dark brown P. solida(;inis. 



Antenna' brown-black ; pedicel about as long and thick as the second fnni- 

 elar joint; club 6-joint oval-moniliform, slightly pedicellate, hairy. 



P. BACCHARICOLA. 



j:Vntenna^, dark l>rown ; pedicel almost as long as three funiclar joints united ; 



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



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



club joints eiiual, oval, the last conic, narrower and longer than the 



preceding P. diplosidis. 



Legs rufous, the tarsi pale. 



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

 the first funiclar joint minute, closely united with the second; the 

 second subtriangular or twisted, dilated towards one side; club 

 6-jointcd, oval-mouiliform, slightly pedicellate, hairy.. P. pinicola. 



2. Coxa', black. 



Legs dark brown, tarsi whitish. 



Pedicel a litths longer than the second 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 P. PROXIMUS. 



Legs black. 



Pedicel as long as the second funiclar joint ; first funiclar joint small, rounded; 



the second shorter than the first club joint; club G-jointed, the 



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



fusiform, thicker, and twice as long as the preceding. .P. asynapt.t;. 



Coxa) pale or brown; antenna' dark l)rown. 



Legs brownish-yellow, posterior femora dusky. 



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



first joint of funicle verj'^ minute, the second a little curved; club 



6-jointed, a little thickened toward apex; the joints, except the 



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



P. ACTINOMKiaOIS. 



3. Coxa* brown or rufo-piceous , 4 



Cox.'e black. 



Vertex ])osteriorly transversely aciculated. 

 Legs and antenna' black, tarsi pale. 

 Pedicel as large as the first ;ind second funicle ioints together, the first 

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

 one side, club G-jointed, the joints oval, gradually increasing in size, 

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

 ceding , P. STKIATICKPS, 



