132 MODERN CLASSIFICATION OF INSECTS. 
family, the thin layers between the seed vessels being converted into 
a solid mass and the pods distorted. Bouché has described this 
species under the name of C. rhocados Klug (Naturg. Ins. 164.). 
Another species, C. frumenti, is destructive to wheat, as described 
by Dumont Coursier (Wém. Boulogne sur Mer, and in Wied. Archiv. 
fir Zool. vol. ii. st. 1.); and I have described and figured a species 
which infests the turnips (Eucoila rape W., in Mag. Nat. Hist. 
vol. viii.); but Mr. Walker states that the species of the latter genus 
are parasites. 
The relations of these insects with the following families have been 
already noticed. It had always appeared to me contrary to nature 
that a tribe of vegetable-feeding insects should be arranged in the 
midst of parasites; nor was it until I had an opportunity of ascer- 
taining the parasitic habits of some of the species of the family that 
I was enabled to form a just notion as to the true value of the para- 
sitic or herbivorous character of these insects. In June, 1833, I de- 
tected a minute species (Allotria Victrix) in the act of ovipositing in 
the body of a Rose aphis (fig. 73. 25.); and I subsequently succeeded 
in hatching specimens of the perfect insect from infested aphides. 
I have described the proceedings of this parasite in the Mag. Nat. Hist. 
vol. vi. p. 491. It is specifically distinct from the Cynips erythro- 
cephala of Jurine, which species Haliday says also infests the Rose 
aphis ; whilst C. fulviceps Curtis, and another, destroy the aphides of 
willows, cow-parsnip, &c. (int. Mag. vol. ii. p. 102.).* 
Mr. Newman subsequently described a species of Figites, the larva 
of which is parasitic upon the larva of Syrphus ribesii (Figites syrphi, 
Entomol. Mag. vol. ii. p. 515.). Costa has also described a parasitic 
Figites in his Memoir upon the insects which injure the olive (Bull. 
Se. Nat. Sept. 1830). 
Bouché has described a species of Figites parasitic upon the pupa 
of a species of Muscidz belonging to the genus Anthomyia (Naturg. 
der Ins. p. 165.). 
The genus Anacharis of Dalman is distinguished by the great 
length of the abdominal peduncle, which gives these insects an ap- 
pearance quite unlike that of the rest of the family. I have described 
several new British species belonging to this genus (Mag. Nat. Hist. 
vol. vi.). Such is also the case with Leiopteron, figured by Perty 
* The Cinips de 0 Ichneumon des Pucerons of Geoffroy, vol. ii. p. 305., referred to 
by Haliday (Ent. Mag. vol. ii. p..99.) as Cynips aphidum, is one of Chalcidide. 
