HYMENOPTERA. 111 
two large dentated hooks, one of which is flexed. Some of the fe- 
males are apterous(1). 
ANTEON, Jur. 
Where the antennz also consist of ten joints, at least in the males; 
but the thorax is continuous. All the tarsi are terminated by ordi- 
nary, simple, and straight hooks. The superior wings have a large 
cubital point(2). 
Beruytus, Lat. Fab.—Omalus, Jur. 
Where the antennz are geniculate and consist of thirteen joints in 
both sexes; where the head is flattened, and the pro-thorax elongated 
and almost triangular(3). 
There, the antenne, 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. 
Procrotrupss, Lat.—Codrus, Jur. 
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(4). 
Sometimes the antennz are very distinctly geniculate. 
Henoruvs, Lat. Jur. 
Where the antennz consist of fifteen joints. The mandibles are 
dentated on thcir inner side. The first abdominal segment forms an 
abrupt, long, and cylindrical pedicle(5). 
(1) Lat., Gen. Crust. et Insect., IV, 39; Dalm., Annal. Entom. 7. 
(2) Jur., Hymenop. 
(3) Lat., Ibid., 40. 
(4) Lat., Ibid., 38. 
(5) Lat., Ibid., 38. 
