114 
graphical form of nemausiensis; it seems to me that the 
differences are very small to give imbecillus specific rank. 
With regard to the species names which I have put 
amongst those of the synonyms I shall firstly deal with 
N. noxius. | possess the type-specimen of that species, 
and the specimen agrees entirely with specimens of im- 
becillus. Concerning propinguus and hellenicus | am quite 
sure that both are only specimens of imbecilus. 
N. imbecillus seems to be rather common in the east- 
ern part of the Mediterranean Region. I have seen long 
series of specimens, especially from Caucasus. 
Nelees sticticus. 
Myrmeleon sticticus Navas, Bol. Soc. Arag. Cienc. Na- 
turales, p. 107, 1903. 
Nelees distichus. 
Myrmeleon distichus Navas, ibid., p. 106, 1903. 
I do not know these two species, which are only 
known from Spain. 
Megistopini. 
Only one genus is found in Europe. 
Megistopus. 
Rambur, Hist. nat. Insectes, Névropteres, p. 410, 1842. 
The angle between Cuz and Cuyzp rather acute. 
Cuza emits three branches within the angular space. 
The areas between Cuza and the hind border of the fore- 
wing and between M 2a and the hind border of the hind- 
wing very broad. No Banksian line. 
Megistopus flavicornis (Pl. IV, fig. 11). 
Myrmeleon flavicornis Rossi, Fauna Etr. II, 16, p. 693, 
0311942; 
Megistopus bisignatus Rambur, Hist. nat. Insectes, Nev- 
ropteres, p. 411, 1842. 
