104 
SYSTEM OF NATURE. 
The following summary results.— 
FOUR CLASSES. SEVEN CLASSES. 
Amorpha = 
-vr , f Hymenoptera 
Necromorpha = j c ' leop J a 
T , (Orthoptera 
Isomorpha = | Hemi £ tera 
Anisomorpha = Neuroptera. 
It will perhaps be excusable also to show the cor¬ 
respondence between the proposed somewhat more precise 
divisions and the earlier divisions of Swammerdam and 
Lamarck : the correspondence is not quite perfect, owing 
to the trivial errors already alluded to as having occurred 
in Swammerdam’s classification: a second supposed ad¬ 
vantage in the proposed new arrangement, consists in the 
greater precision and applicability of the names. 
SWAMMERDAM. 
Obtected = 
Incomplete = 
Semicomplete = 
LAMARCK. 
Chrysalis 
Mumia 
Nympha 
PROPOSED ARRANGEMENT. 
= Amorpha 
= Necromorpha 
= Isomorpha. 
The varied character of Neuroptera generally, and the 
normal character of its principal group, the dragon flies, sug¬ 
gest its position as a normal and central class: the group 
comprising the Linnean genus, Phryganea, both in habit 
and metamorphosis closely approaches the Lepidoptera : 
the group comprising the genus Corydalis, &c., in all its 
states comes very near the Hymenoptera: and the isomor- 
phous Perlina equally approach the Orthoptera. Having 
