HYMENOPTERA, 229 



Anteon, Jur., 



Where the antennae also consist of ten joints, at least in the males; 

 but the thorax is continuous. All the tarsi are terminated by ordi- 

 naiy, simple, and straight hooks. The superior wings have a large 

 cubital point *. 



Bbthylus, Lat. Fab. — Omalus, Jur., 

 Where the antennae are geniculate and consist of thirteen joints in 

 both sexes; where the head is flattened, and the pro-thorax elongated 

 and almost triangular f . 



There, the antennae, always composed of from thirteen to fifteen 

 joints, are inserted near the middle of the anterior face of the head. 



Sometimes they are straight or nearly so. 



Proctotrupes, Lat. — Codrus, Jut., 

 Where they consist of thirteen joints' in both sexes. The mandi- 

 bles are arcuated and dentated on the inner side ; the abdomen is 

 briefly and insensibly pediculated, terminating, in the females, in a 

 frequently long and horny point or tail forming the ovipositor ; the 

 second ring is very large %. 



Sometimes the antennae are very distinctly geniculate. 



Helorus, Lat. Jur., 

 Where the antennae consist of fifteen joints. The manditles are 

 dentated on their inner side. The first abdominal segment forms an 

 abrupt, long, and cylindrical pedicle §. 



^Belyta, Cinetus, Jur., 

 Where the antennae are composed of fourteen or fifteen joints; they 

 are filiform in the males, more granose and thicker near the end in 

 the females jj. 



The other Oxiuri have neither cells, nor brachial, nor basilary 

 nervures. 



These have their antennae inserted on the forehead. 



DiAPRiA, Lat. — PsiLus, Jur. 



No cell whatever in the wings. The maxillary palpi are salient, 

 and the antennae have fourteen joints in the males, or twelve in the 

 females^. 



In those they are inserted near the mouth. 



Lat. 

 Wings furnished with a radial cell ; the maxillary palpi salient ; 



