MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 407 



Tip of scntelluni not compressed from the sides, rounded or truncate, with- 

 out a carina; abdomen ovate or oblong oval, often truncate at tip. 

 Petiole much longer than thick; metathoras always with a distinct ridge 



or conic prominence at base Diapria Latr. 



Petiole not longer than thick, densely woolly ; metathorax most frequently 

 Avithout a conic prominence at base, usually areolated. 



Club 3-jointed Cekatopiua Ashm., gen. nov. 



Club 4 or 5 jointed Trichopiua Ashm., gen. nov. 



Scutellum not foveated at base. 



Axilla? not separated Pii.enopuia Ashm., gen. nov. 



4. Scutellum not foveated; club consisting of one enlarged joint. 



Mesonotum without furrows M(")NELATa Fiirst. 



Scutellum foveated at base, club with more than one joint. 

 Mesonotum without furrows, or only slightly indicated posteriorly. 



Basal nervure present ; anteimal club abrupt, 4-jointod Basalys Westw. 



Basal nervure absent; antenna! club not abrupt, the flagellum subclavate; 

 antenme 14-jointed Mykmecopria Ashm., gen. nov. 



MALES. 



Antenna? 13-jointed 4 



Antennic 14-jointed. 



Scape not especially developed ..... ^ 2 



Scape abnormally developed. 

 Apterous ; mesonotum without furrows Platyaiisciius Westw. 



2. Face not lengthened ; mandibles not rostriform 3 



Face lengthened; mandibles rostriform. 



Mesonotum with 2 furrows. G.4.LESUS Curt. 



3. Wings with a basal nervure. 



First flagellar joint much shorter than the second Basalis Westw. 



First flagellar joint not shorter than the second. 



Mesonotum wi thout furrows Loxotkopa FiJrst. 



Wings without a basal nervure; mesonotum without furrows. 

 Scutellum foveated at base. 

 Tip of scutellum compressed from the sides; the disk or apex with a median 



carina Tropidopki a Ashm., gen. nov. 



Tip of scutellum not compressed from the sides; rounded or truncate, without 

 a carina. 



Antenme nodose- verticillate, the joints pedunculated ...Diapria Latr. 



Antenna' filiform or moniliform, not nodose-verticillate. 

 Antenna? iiliform, the joints from the fourth oval or moniliform, but not 

 thickened toward tijis. 

 Second flagellar joint longer and thicker than the first, usually curved 

 or angulate towards one side, the joints beyond rounded, with long 



Second flagellar joint shorter than the first; the first four or five joints 



twice longer than thick; the joints beyond long-oval or moniliform 



with short hairs, or joints after the second moniliform, pilose. 



Trichopria Ashm., gen. nov. 

 Scutellum not foveated at base. 



Second flagellar joint about as long as the first, the joints beyond long-oval or 



moniliform, hairy Ph j;nopria Ashm., gen. nov. 



4. Scutellum not foveated at base. 



Mesonotum without furrows. 



First flagellar joint not half as long as the second .......... Monelata Forst. 



