HYMENOPTERA. 227 



forms a triangular palette ; the tliree last form an abrupt and elon- 

 gated club. They are covered with hairs *. 



EURYTOMA, Illig., 



Where the antennae are as if knotted, and furnished with whirls of 

 hairs in the males. The ovipositor is short f . 



MisocAMPE, Lat. — DiPLOLEPis, Fah., 



Where they are composed, in both sexes, of compact joints and are 

 destitute of the whirls of hairs. The ovipositor is long. 



The larva of one species inhabits the gall of the wild Rose tree, 

 and devours that of the Cynips, which formed it \. 



In the others the abdomen is flattened above, and either triangular 

 and terminated in a long point in the females, or almost cordiform or 

 nearly orbicular. The ovipositor is usually concealed, or but slightly 

 salient. 



Here the nervure of the superior wings, situated near the margin, 

 is always curved, and imites with the callous point at the exterior 

 edge. The two posterior legs are the longest. The inner spine of 

 the intermediate tibiae is small. 



Perilampus, Lat., 



Where the mandibles are strongly dentated ; the club of the antennae 

 is short and thick ; the abdomen short, cordiform, and not prolonged 

 at the extremity, and the scutellum thick and salient §. 



In the two following subgenera the abdomen of the females is pro- 

 longed into a conical point. The club of the antennae is narrow and 

 elongated. 



Pteromalus, Lat. — Cleptes, Fab., 



Where the thorax is short and not narrowed anteriorly |(. 



Cleonymus, Lat., 



AVhere it is elongated and narrowed anteriorly. The abdomen is 

 also proportionally longer, and the antennae are inserted more infe- 

 riorly^. 



There the nervure of the superior wings, situated near the margin, 

 is sometimes straight, and unites at the callous point. The interme- 

 diate legs are the longest, and the inner side of their tibiae is furnished 

 with a stout spine. 



The scutellum projects. 



EupELMus, Dalni., 

 Where the infra-costal nervure, as in the preceding Insects, is curved, 



* Dalm., Anal. Entom., 30 ; II, 1 — 6. 

 t Lat. Gener. Crust, et Insect., IV, 27. 

 :J: Lat. Ibid., 29 ; genus Cynips, 

 § Lat. Ibid., 30. 

 il Lat., Ibid., 31. 

 \ Lat., Ibid., 29. 



