MONOGRAPH OF THE NORTH AMERICAN PiiOCTOTRYPID^. 367 



TABLE OF SPECIES. 



Antenna' not blaok 2 



Antenna" black or piceons-black. 

 Hind coxa» black. 



Legs inlbus P. Montana, sp. nov. 



Femora and tibia' more or less black or piceous P. picipes, ep. nov. 



Marginal vein shorter tlian the st igmal , . 3 



Marginal vein longer than the stignial. 

 Legs yellowish. 



Scape and pedicel yellowisli, ilagellnm fuscous. 



Last joint of antenna' enlarged, oblong, about 5 times as long as the pre- 

 ceding. 



Metathorax and abdomen brownish P. MEtiAPLASTA, s^). nov. 



Antenna^ brownish-yellow or only fuscous toward tips. 

 Antenna} subclavate, moniliform. 



Marginal cell twice as long as the marginal vein, the first branch of 



radius only slightly oblique P. insulakis, sp. nov. 



Antenna- much iucrassated, moniliform. 



Marginal cell not longer than the marginal vein, the first branch of 



radius very oblique P. ckassicornis, sp. nov. 



Marginal cell about 5 times as long as the marginal vein, the first bi'anch of radius 

 obliijue, twice as long as the marginal vein. 

 Legs pale rufous or brownish-yellow. 

 Antennie rufous, dusky towards tips, the first flagellar joint twice as long as 

 the pedicel, the following joints moniliform, after the fourth trans- 

 verse-moniliform. 



Abdomen rnfo-piceous, the tip reddish-yellow P. analis, sp. nov. 



Marginal cell about four times as long as the marginal vein, the first branch 

 of radius oblitjue, very little longer than the marginal vein. 

 Legs pale rufous or brownish-yellow. 

 Antenna? brownish-yellow, slightly fuscous toward tips, the first flagellar joint 

 twice as long as the pedicel, the following joints all round, monili- 

 form. 



Abdomen black, the apex ru fous P. ruficauda, sp. nov. 



Antennaj fuscous, the three basal joints yellow. 

 Abdomen black, l)ase of second segment above and beneath, rufons ; flagellar 

 joints after the fifth less than twice as long as thick. 



P. i-LAViPES, sp. nov. 

 Abdomen entirely l»lack; flagellar joints after the fifth thrice as long as 



thick P. coLOKADENsis Ashm, 



Marginal cell not more than thrice as long as the marginal vein or shorter, the 

 first branch of radius oblique. 

 Antenufc and legs rufous, the former incrassated and fuscous toward tips. 

 First flagellar joint about twice as long as the pedicel, the joints after the 



fourth tranverse-moniliform P. californica, sp. nov. 



First flagellar joint twice as long as the pedicel, the joints after the tliird 

 transverse-moniliform, slightly pedicellate; body brownish-piceoiis. 



P. RUFESCENS, Sp. nOV 



Antenna' and legs pale brownish-yellow, the former filiform, dusky toward tips. 



First flagellar joint more than twice as long as the pedicel, the joints alter the 



third equal, not longer than thick P. fi.oridana. 



