220 INSECTA. 
Bombyzx vinula. They are attached to it by means of a long 
and slender pedicle. ‘There the larve live and grow, with the 
posterior extremity of their body involved in the pellicle of the 
eggs from which they sprung, without preventing the Caterpil- 
lar from spinning its cocoon ; but they finally kill it by consum- 
ing its internal substance, when they make their own cocoons, 
which are placed close together, and at length issue forth under 
the form of Ichneumons. 
The larva of another species, the O. moderator, Fab., de- 
stroys that of another Ichneumon, the Pimpla strobilelle, Fab. * 
Bancuus, Fab. 
Similar as to the antenne, but the abdomen of the females is nar- 
rowed at the end and terminated in a point f. 
HELwIGcIA. 
The port of the preceding Insects, but the antenne thicker near the 
extremity f. 
Sometimes the abdomen is rather flattened than compressed, being 
either somewhat oval, or almost cylindrical, or fusiform. 
In these, the abdomen is considerably narrowed at base in the man- 
ner ofa pedicle, 
Joppa, Fab. 
The Joppa are removed from the following subgenera by their an- 
tenn, which are widened or thickened anterior to the extremity, and 
then terminate in a puint §. 
IcHNEUMON proper, 
Where the head is transversal and the abdomen somewhat oval, and 
almost equally narrowed at both ends. 
Panzer has separated generically, under the name of Trogus, those 
species in which the scutellum forms a conical tubercle, and the abdo- 
men presents deep transversal incisures ||. 
Atomya, Fab., 
Where the head is narrower and more rounded, with the abdomen 
more widened near its posterior extremity. 
An Ichneumon inhabiting France, and which appears to us 
nearly allied to the femoralis of Gravenhorst—Ichn. Pedem., 
No. 136—and otherwise closely approximated to the Alomye, 
is remarkable for its pyramidal head with an anterior elevation 
bearing the antenne. It might form the type of another sub- 
genus—Hypsicera 4. 
* Fab., Syst. Piez.; and Encyc. Méthod., article Ophion. 
+ Fab., Tbid. 
} See the Bullet. Univers. des Sc. of Baron Férussac, 
§ Fab., Syst. Piez. 
\| Fab., Ibid., and Panz, Hymenopt, 
§) The same works, 
