230 INSECTA. 
the antennz filiform in both sexes, and consisting of eleven joints ; 
abdomen ovoido-conical *. 
Sparasion, Lat. 
Similar to Ceraphron in the radial cell, and the projection of the 
maxillary palpi; but the antenne have twelve joints in both sexes, 
are thickest at the extremity or clavate in the females, and the abdo- 
men is flattened +. 
Then follow two subgenera also provided with a radial cell, and 
in which the antenne, as in Sparasion, are thickest at the end or 
clavate in the females, and where the abdomen is flattened ; but the 
palpi are very short and do not project, or are not pendent. 
Te.eas, Lat., 
Where the antenne are composed of twelve joints ft. 
Sceuion, Lat., 
Where those organs consist of but ten joints §. 
In the last subgenus, or 
PratyeGaster, Lat. 
The radial cell disappears. The antenne of both sexes have but 
ten joints, of which the first and third are much elongated. The 
palpi are very short. The abdomen is flattened, and in the form of 
a spatula. 
To this subgenus I refer the Psi/e de Bosc of Jurine, a sin- 
gular Insect,in which the first ring of the abdomen gives origin 
to a solid horn which curves forwards to above the head, and 
which, according to the observations of an able naturalist, M. 
Leclere de Laval, is the sheath of the ovipositor. This apes 
is very small and entirely black |}. 
In the sixth tribe, or the Curysipes, Lat,, the inferior wings, as in 
the three preceding tribes, are not veined; but their ovipositor is 
formed by the last rings of the abdomen in the manner of the tubes 
of a spy-glass, and terminates in a little sting. The abdomen, which 
in the females appears to consist of but three or four rings, is con- 
cave or flat beneath, and can be flexed on the pectus, in which state 
the Insect is globular. 
This tribe comprises the genus 
Curysis, Len. 
The lustre and richness of the colours which decorate these Insects 
may challenge a comparison with those of the Humming-birds, and 
* Lat., Gener. Crust. et Insect., 1V, 35. For some account of an American 
species of this Insect, the destructor, which deposits its ova in the bodies of the 
larve of the Cectdomyia destructor, or Hessian-Fly, see Say, Journ. Ac. Nat. Sc. of 
Philad. vol. I, part i, p. 47, 48. 
} Lat., Ibid., 34. 
7 at. ibids..32. 
§ Lat., Ibid., 32. 
|| Lat. Gen, Crust, et Insect. IV, 32. 
