CLASS V. IN3ECTA. 
269 
Division I. — Abdomen with five very distinct segments. 
Subdivision 1. Superior wings with the first submarginal cell very large , 
the two discoidal cells situated longitudinally, one above the oilier. 
Genus 429. ICHNEUMON. Lair., Leach. 
Maxillary pulpi with very unequal joints ; oviduct with its base not co- 
vered by a large scale, exserted. 
[This Genus consists of several natural genera; but the charac- 
ters are obscure, and are not yet fully understood. The following 
divisions are proposed by Latreille, who has submitted Uiese in- 
sects to a scrupulous and daily investigation. 
Division A. 
Abdomen but little or not at all compressed. 
Subdivision a. 
Extremity of the abdomen of the female compressed and obliquely trun- 
cated : oviduct exserted. 
1. * Abdomen cylindric, with a very short peduncle. 
Genus Pimpla of Fabricius. 
2. ** Abdomen somewhat ovoid, with the peduncle long, slender, and 
arcuate. 
Genus Cryptus of Fabricius. 
Subdivision li. 
Extremity of the abdomen of the female slightly compressed, not ob- 
liquely truncated : oviduct scarcely prominent or exserted. 
3. * Abdomen cylindric, almost sessile. 
Genus Mktopius of Panzer. Pelastes of Illigcr. 
4. ** Abdomen almost'fusiform or cylindric , gradually narrower to- 
wards the base; the peduncle not slender or arcuate. 
Genus Alomya of Panzer. 
5 *** Abdomen ellipsoid or ovalate, with the peduncle slcndcr-and 
arcuate. 
Genus Ichneumon of Fabricius. 
Division B. 
Abdomen very much compressed. 
6. * Apex truncate in the females. 
Genus Ophion of Fabricius. 
7. ** Abdomen with the apex pointed. 
Genus BaNchvs of Fabricius ] 
