268 MEMOIRS OF THE CARNEGIE MUSEUM 



9. AntennEe ll-jointed 10 



Antennse 13-joiuted .Rhipipallus Kirby (type Eucharis volusus Walk.). 



10. Scutellum rounded, not conically elevated posteriorly ; wings hyaline. Pseudochalcura Ashmead g. nov. 



(type Eucharis gibbosa Provancher). 

 Scutellum subcouically elevated posterioi'ly ; wings with a substigmal cloud or fascia. Chalcura Kirby 



(type Eucharis deprivata Walk.). 



11. Scutellum with the processes very long, usually as long as the abdomen and sometimes very broad, 



forming a shield over the abdomen, or conically produced 13 



Scutellum bidentate, the processes never very long. 



Metathorax armed with strong lateral projections or teeth 12 



Metathorax unarmed, without teeth. 



A hump-like elevation above the metapleura Stilbula Spinola 



(type Ichneumon cynipiformis Rossi). 



No hump-like elevation above the metapleura Schizaspidia Westwood 



(type S. furcifera Westw.). 



12. Metathoracic processes curving downwards Lophyrocera Cameron (type L. stramineipes Gam.). 



Metathoi'acic processes consisting of two diverging horizontal teeth Tetramelia Kirby 



(type Schizaspidia plagiata Walk.). 



13. Scutellum not conically produced 14 



Scutellum conically produced over the abdomen. 



Head with a deep antennal furrow ; hind femora very broad ; abdomen subsessile, fusiform, 

 depressed Destefania Dalla Torre (type Sfernodes Pasateri De Stef.). 



14. Scutellar processes long and slender, generally curving inward toward tips 18 



Scutellar processes very broad and covering the entire abdomen. 



Thorax not pubescent, the apex of the scutellar processes simple, or cleft or notched 15 



Thorax pubescent, the apex of the scutellar processes rounded and not sharply cleft, the notch 

 extending two thirds the entire length 17 



15. Scutellar processes long, broad and contiguous, but very flat, the extremities rounded, subtruncate, or 



furnished with two rounded short spines 16 



Scutellar processes not so shaped. 



Scutellar processes very broad, triangular .... Thoracantha Latreille (type T. latreillei Guerin). 

 Scutellar processes long, contiguous and acutely pointed at tips, longitudinally striate. 



Uromelia Kirby (type Thoracantha striata Perty). 



16. Mesonotum and scutellum medrally impressed ; head almost as wide as the thorax ; antennse 10-jointed, 



the third joint as long as the scape, the following much wider than long Dicoelothorax Ashmead 



(type D. platycerus Ashm.). 



Mesonotum and scutellum not so impressed, the scutellar processes having the basal portion as wide as 



the thorax, briefly compressed in the center, then dilated and at the apex furnished with two rounded 



short spines Lsetocantha Shipp (type Thoracantha nasua Walk.). 



17. Antennse 10-jointcd, the first funicle joint the longest, the following short Dilocantha Shipp 



(type Thoracantha flavicornis Walk.). 



18 . Head and eyes normal, not tuberculate 19 



Head and eyes tuberculate. 



Antennaj 12-jointed Isomeralia Shipp (type Thoracantha coronata Westw.). 



19. Antennse ll-jointed, the third joint not much longer than the fourth 20 



