Abstract
In a recent paper on the genus Chloroperla I divided this genus, as it had been used, into two genera; neither of which being a true Chloroperla, I proposed the names Isoperla and Alloperla. The character I used in this division was one proposed by Prof. Needham to separate the Perlini from the Nemourini. This is the condition of the median vein near the base of fore wings, whether united to the radius, or running parallel to the radius.
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