1930 ] Wing Venation of the Odonata and Agnatha 279 
of the Hemiptera. Eugereon, together with several other 
forms, represents only one on the branches of the Palseo- 
dictyoptera, and one can hardly connect it with the Hemip- 
tera, which represents an entirely different trunk and must 
be referred to my group Neoptera; the latter separated very 
early from the division Paleoptera, to which one should 
assign Eugeron Dorhn. To all these questions I hope to 
return. Fall, 1924. 
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