NEUROPTERA. 193 
E. vulqaia, L.; De Geer, Insect., II, xv, 9—15. Four wings; 
three filaments at the extremity of the abdomen; brown; abdo- 
men deep yellow, marked with triangular black spots; wings 
spotted with brown. 
E. diptera, L. But two wings; the male with four com- 
pound eyes, two of which are larger than the others and placed 
perpendicularly like two columns *. 
FAMILY II. 
PLANIPENNES. 
This family, which, with the third, forms the greater part of the 
order of the Synistata of Fabricius, comprises those Neuroptera in 
which the antenne, always multiarticulated, are much longer than the 
head, without being subulate or styliform. Their mandibles are 
very distinct; their inferior wings almost equal to the superior ones, 
and extended or simply folded underneath at their anterior margin. 
Their wings are almost always much reticulated and naked; their 
maxillary palpi are usually filiform or somewhat thicker at the extre- 
mity, shorter than the head, and composed of from four to five joints. 
I will divide this family into five sections, which, by reason of the 
habits of the Insects that compose them, form as many small sub- 
families. 
1. The Panorpat# of Latreille, which have five joints to ail the 
tarsi, and the anterior extremity of their head prolonged and nar- 
rowed in the form ofa rostrum or proboscis. 
They constitute the genus 
Panorpa, Lin. Fab., 
Where the antenne are setaceous and inserted between the eyes; 
the clypeus is prolonged into a conical, corneous lamina, arched 
above to cover the mouth, and the mandibles, maxillz and labium are 
almost linear. They have from four to six short, filiform palpi; in 
those of the maxille I could distinctly perceive but four joints. 
Their body is elongated, the head vertical, the first segment of the 
trunk usually very small, in the form of a collar, and the abdomen 
conical or almost cylindrical. 
There is much difference between the two sexes in several species. 
Their metamorphoses have not yet been cbserved. 
In some, and the greater number, the naked or exposed portion of 
the thorax is formed of two segments, the first of which is the smallest. 
* For the other species, see Olivier, Encyc. Méthod.; Fabricius; Latreille, Hist. 
Gener. des Crust. et des Insect, t. XIJ{, p. 93; and Lat. Gen, Crust. et Insect., 
IIT, pe P83: 
