ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 285 



28. Mesonotum with the furrows complete 30 



Mesonotum with incomplete furrows, indicated only anteriorly. 



Marginal vein not thickened 29 



Marginal vein thickened, shorter than the postmarginal Zapachia Forster. 



29. Wings with a transverse band or fascia. 



Stigmal club very large Acrocormus Forster. 



Stigmal club small Brachycaudonia Ashmead. 



Wings hyaline, without a fascia. 



Stigmal club small Caudonia Walker. 



30. Abdomen petiolate 34 



Abdomen sessile. 



Scutelhim luith a transverse grooved line before apex 31 



Scutellum without a transverse grooved line before apex 32 



31. Pronotum very short, visible from above as a fine transverse line 32 



Pronotum not very short. 



Pronotum quadrate. Merostenus Walker. 



Pronotum transverse Trigonoderus Westwood. 



32. Metanotum not short, smooth and with a sharp median carina ; antennfe 13-jointed. 



Anoglyphis Forster. 

 Metanotum very short, closely punctate ; antenn£e 14-joiuted Macromesus Walker. 



32. Postmarginal vein well developed 33 



Postmarginal vein scarcely longer than the short stigmal vein. with its knob ; scutellum with two par- 

 allel dorsal grooved lines ; metanotum with a median carina ; antennae Dinoura Ashmead. 



33. Middle tibia? not dilated at apex Platygerrhus Thomson. 



Middle tibiae dilated at apex, the tarsi much thickened at base Pegopus Forster. 



34. Scutellum without a transverse grooved line before the tip Photismus Thomson. 



Subfamily III. Pelecinellijst^. 

 1897. PelecinellinEe, Subfamily III., Ashmead, Proc. Ent. Soc. Washington, IV., p. 201. 



This subfamily is at present represented by a single genus, Pelecinella Westwood. 

 Three species have been described, all from Brazil, and these are the largest and in 

 some respects the most striking looking Chalcid-flies known. 



The affinities of the group were discussed in my paper, "On the Genus Peleci- 

 nella Westwood," published in 1897. 



Form very elongate ; pronotum very long, longer and narrower than the mesonotum, contracted in front ; 

 head with a deep frontal furrow; abdomen long, compressed, lanceolate, ending in a long ovi^DOsitor, and 

 longly petiolate ; hind legs long, the coxae long and cylindrical, the tibiae longer than the femora, very 

 gradually widened toward apex and terminating in two spurs, the tarsi slender, as long as the femora, the 

 first joint longer than joints 2-5 united ; stigmal vein very short, the marginal vein long, the postmarginal 

 longer than the marginal Pelecinella Westwood (type B. phantasma Westw.). 



Subfamily IV. CoLOTRECHNiNiE. 

 1875. Colotrechnides, Subtribus, Thomson, Hym. Skand., IV., p. 217. 

 1878. Colotrechnides, Subtribus, Thomson, Hym. Skand., V., p. 46. 



