4-21* SYSTEM OF INSECTS. 
stemmata between the eyes ; the prothorax is conspi- 
cuous, and behind is producted into a long scutelliform 
process, under which all the parts also are analogous ; 
the abdomen articulates with the trunk in the same way, 
is similar in shape in both, and consists of short inoscu- 
lating segments. Some Tul^oridcc and Truxalidcs agree 
also in their producted front. Other analogous charac- 
ters might be named between these tribes, but these are 
sufficient to confirm M. Savigny's opinion. That the 
Neuroptera present analogies to the Lepidoptera, though 
they differ so widely from them in their metamorphosis 
and habits, is evident from the instance lately adduced 
of Ascalaphus italicus, which was described as a butterfly 
by Scopoli a ; and many of the Libcllulina, by their wings, 
partly transparent and partly opaque, and by the shape 
of those organs and of their bodies, imitate the Helico- 
nian butterflies : and this resemblance is much more 
striking than any that occurs between the perfect insects 
in the Neuroptera and Homopterous Hemiptera. With 
regard to the Hymenoptera and Diptera the analogy is 
undisputed, and must strike every beholder ; and one 
would almost say it was a real affinity, were it not that 
the resemblance is not only general between Order and 
Order, but that almost every Hymenopterous tribe has 
its counterpart amongst the Diptera ; the saw-flies b 
for instance, the ichneumons, the various false-wasps c , 
the false-bees d , the bees, the humble-bees, the ants, 
&c.) severally find there a representative that wears 
3 Ent. Cam. 168. n. 446. 
b Mcigen lias figured a Dipterous insect exactly resembling a Cm. 
bex, which he calls Aspistes berolinensis (Dipt.i. 319. /. xi./. 16, 17-) 
Preedoncs L:\tr., &c. d Andrena F., 8cc, 
