102 
Cu2 in the forewing. These two nervures are for a ra- 
ther long distance running parallel to each other and with 
Cuia and the hind border of the wing. 2A and 3A in 
the forewing coalesce for a very short distance. 
In the Megistopini and the Gymnocnemini, two tribes 
only represented in the European fauna by one genus each, 
the 2A and 3A in the forewing coalesce for a rather long 
distance. 2A forked, 3A unforked. In the Megistopini 
2A in the hindwing runs into the hind margin of the 
wing in the usual manner; in the Gymnocnemini, however, 
2A runs parallel with the hind margin of the wing, and 
it coalesces with 7A before this nervure reaches the margin. 
In the Megistopini 2A and 3A in the forewing coalesce 
before 2A emits the second crossvein to 7A; in the Gymno- 
cnemini this crossvein is emitted before 2A coalesces 
with 3A. 
In the Formicaleonini, which are well-represented in 
the European fauna, Cuzp and Cu2 in the forewing are 
running obliquely to the hind margin of the wing. 
In the forewing 2A and 3A touch each other in a point; 
2A unforked, 3A forked. 2A emits its second crossvein 
to 7A at that point where it touches 3A, or a little fur- 
ther out. In the hindwing 2A is hardly visible. Wings 
rather long and lanceolate. 
Now we want to deal with those, in which the basal 
and free part of the Cz2 in the forewing only has the 
shape of a somewhat oblique crossvein, which touches 
JA rather long before that point where the first true cross- 
vein is emitted to Cul. In that tribe, Macronemurini, 
2A and 3A in the forewing coalesce for a longer or shor- 
ter distance. 2A unforked; 3A forked. 
When we turn to the Myrmeleoninae, we firstly look 
upon the Lopezini, a tribe only represented in the Euro- 
pean fauna by one genus, Lopezus. This tribe may be 
considered as an old one, in the forewing of which Rs 
arises a little before, or at the level of the fork of Cuz. 
