MONOGRAPH OF THE NOUTII AMERICAN PROCTOTRYriD^.. 343 



yellow. Motiitliorax U times as lon^ ns liipli, rupjose, smooth toward 

 base above, with a median cariua. Win{«-8 hyaline, the discoidal ner- 

 vures traceaole .as fuscous streaks, stigma brown, the marginal cell less 

 than half the length of the stigma, petiolated. Abdomen black, polished) 

 about as long as the thorax, i)etiolated, the petiole not longer than thick, 

 striated, extreme base of second segment striated, ovipositor not longer 

 than the basal joint of hind tarsi. 



Habitat. — Arlington, Va. 



Type in Coll. Ashmead. 



Described from a single specimen captured by myself. Since this 

 was written I have received another specimen, taken by Mr. E. A. 

 Schwarz, at Fort Pendleton, W. Va., agreeing in every particular with 

 the above description, except the coxie are C(>ncolorous with the legs. 



Proototrypes medius, np. nov. 



9 . Length, 5.5""". Polished, bla<?k; antenufe brownish-yellow, rather 

 stout, the tirst flagellar joint the longest, a little longer than the scape 

 and pedicel together, or one-third longer than the second, the joints 

 after the fourth about 3 times as long as thick, the last longer, as long 

 as the second; legs, including coxje, reddish-yellow, the inner spur of 

 posterior tibiae fully one-third the length of the basal tarsal joint. 

 Metathorax less than twice as long as high, coarsely rugose, with a 

 median carina and two large, smooth areas toward base. Wings hya- 

 line, the discoidal nervures very faintly traceable, the stigma brown, 

 the marginal cell about one- fourth the length of the stigma. Abdomen 

 black, polished, longer than the thorax, pectiolated, the petiole longer 

 than thick, striated; ovipositor as long as the basal joint of hind tarsi, 

 stout. 



Habitat.— Ottawa, Canada. 



Type in Coll. Ashmead. 



Described from a single specimen received from Mr. W. Hague Har- 

 rington. Approaches nearest to P. longiceps, only the head is a little 

 wider than long, the metathorax shorter, more coarsely rugose, the 

 petiole sho' ter, while the tibial spurs are longer. 



Proototrypes quadriceps, sp. nov. 



5. Length, 4""". Polished black; legs reddish -yellow, the coxae a 

 little dusky basally; inner spur of hind tibije a little less than half the 

 length of the basal tarsal joint ; i>alpi whitish or pale yellowish ; meta- 

 thorax scarcely longer than high, rugose, with a median carina and two 

 large, smooth areas on either side of it, inclosed at sides by delicate 

 lateral carinae. Antennae rubust, filiform, reddish -brown, scarcely 

 longer than the head and thorax together, the 3 basal joints yellowish, 

 the first flagellar joint scarcely as long as the last or very little longer 

 than the second. Wings hyaline, the discoidal nervures subobsolete) 



