126 
parallel with Cuz; its apical part strongly curved before 
emitting the last crossvein to Cul. Posterior Banksian 
line present. Crossveins present in the apical area of both 
pairs of wings. Basal tarsal joint somewhat shorter than 
the apical one. Spurs straight and about as long as the 
first tarsal joint. i 
Genotype the below named species. 
Euroleon europaeus (Pl. IX, fig. 28). 
Myrmeleon europaeus Mac Lachlan, Ann. Soc. Ent. Belg., 
p. 137,.187%. 
This species is found in the greater part of Europe 
and in Caucasus. The insect is easily known by its spot- 
ted wings. 
Acanthaclisini. 
Body and legs as a rule very stout and with long 
and dense pilosity. In the hindwing 2A is unforked 
(in a few genera, f. inst. Syngenes and Epacanthaclisis 
2A is forked). 3A forked. In the hindwing the apical 
part of Cuz fuses totally or for a rather long distance 
with M2p (in Paranthaclisis these two nervures seem 
to be independent). 7A and 2A always present. 7A forms 
together with 2A a conspicuous circular cell. In Ep- 
acanthaclisis 2A is rather long, and before it runs into 
the hind margin, it is connected with 7A by a crossvein. 
Only one genus is present i Europe. 
Acanthaclisis. 
Rambur, Hist. nat. Insectes, Névroptéres, p. 378, 1842. 
In »Entom. Monthly Mag.“, Vol. XX, p. 181—189, 
1883—84, Mac Lachlan gives a series of characters to 
differentiate the two European species. The most distinc- 
tive character amongst those is found in the different 
shape of the two rows of cells in the costal area of the 
forewing. 
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