101 
leonidae, may be divided into two subfamilies, the Den- 
droleoninae and the Myrmeleoninae’). 
In the hindwing of the Dendroleoninae Rs arises close 
to the base of the wing, and only one (very seldom two) 
crossvein is found in theradial area before the origin af Rs. 
This subfamily is the oldest. 
In the hindwing of the Myrmeleoninae Rs arises fur- 
ther out, and at least two crossveins are found in the ra- 
dial area before the origin of Rs. 
When we turn to the Dendroleoninae we find that in 
the European genus, Dendroleon, and in the extra-Euro- 
pean genera, Episalus, Froggattisca, Periclystus, Gleno- 
leon, Chrysoleon, Cymothales etc., Rs in the forewing ari- 
ses before the level of the fork of Cuz. In their forewing 
Cu2 is rather long and easily recognizable; between it 
and Cu two or more crossveins are present before it coa- 
lesces with 7A. In the forewing 2A and 3A are well se- 
parated (in a few cases the two nervures touch each other 
at a point). Body, legs and antennae are rather slender. 
This group may be looked upon as atribe, Dendroleonini, 
and it seems to me to be very distinct, and. to be the most 
archaic one within the Drendroleoninae. 
Amongst the rest of the Dendroleoninae we shall look 
upon all those in which Cw2 in the forewing is easily 
recognizable. This nervure coalesces with ZA at the point 
where it emits its first crossvein to Cuz or a little further 
out. Sometimes this basal part of Cu2 is quite hyaline, 
like the membrane of the wing, and a good magnifying- 
glass or better a microscope is then necessary. In this 
group the Rs in the forewing arises further out than the 
level of the cubital fork. In the forewing 2A and 3A touch 
each other at a point, or they coalesce for a short distance. 
One of the most distinct groups is the Creagrini, 
a tribe characterized by the peculiar shape of Cwzp and 

*) N. Banks: The Canadian Entomologist, pag. 67—71, 1899, 
