NEUROPTERA. 187 
2. Carnivorous Insects, subject to a complete metamorphosis, with 
aquatic or terrestrial larvee. 
3. Carnivorous or omnivorous terrestrial Insects, subject to a semi- 
metamorphosis. 
4. Herbivorous Insects, subject to a complete metamorphosis, with 
aquatic larvee, which construct portable dwellings. 
We will end with those species in which the wings are the least re- 
ticulated, and which resemble Phaleene or Tineites. 
FAMILY TI. 
SUBULICORNES, Lat.* 
This family is composed of the order Odonata of Fabricius, and of 
the genus Ephemera. The antenne are subulate, and hardly longer 
than the head; they are composed of seven joints at most, the last of 
which is cetaceous. The mandibles and the maxille are completely 
covered by the labrum and labium, or by the anterior and projecting 
extremity of the head. 
The wings are always reticulated and distant, sometimes laid hori- 
zontally and sometimes placed perpendicularly; the inferior are as 
large as the superior, or sometimes very small, and even wanting. 
The ordinary eyes are very large and prominent in all of them; and 
they all have two or three ocelli situated between the former. The 
two first periods of their life are passed in the bosom of the waters, 
where they prey on living animals. 
The larve and chrysalides, which approximates in form to the per- 
fect Insect, respire by means of peculiar organs situated on the sides 
or extremity of the abdomen. They issue from the water to undergo 
their ultimate metamorphosis. 
Tn some the mandibles and maxillz are corneous, very strong, and 
covered by the two lips; the tarsi are triarticulated; the wings are 
equal, and the posterior extremity of the abdomen is simply terminated 
by hooks or laminiform or foliaceous appendages. ‘They form the 
Fabrician order of the Odonata, or the genus 
Lipetiuta, Lin. Geoff. 
The light and graceful figure of these Insects, the beautiful and va- 
riegated colours with which they are adorned, their large wings, re- 
sembling lustrous gauze, and the velocity with which they pursue the 
* A section, divided into two families, the LrseLLULIN&, in my Fam. Nat. du 
Régn. Animal. 
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