The larger part of the swamp near the railroad is exposed to the sun, and this portion of the swamp apparently has resulted from the fill for the railroad grade. Back from the railroad the swamp is interspersed with smaU thickets which shade the ground, and at the extreme upper portion it ends in woods through which a small and very muddy creek flows into the swamp. In the afternoon, after several hours at the swamp, we detected for the first time a slender dragonfly in grass, and clinging to small twigs and vines just at the border or slightly back from the border of the swamj) and in the shade. Having once found it we could hardly believe we had overlooked it during the earlier part of the day. But a short time could be spent that day looking for them but we succeeded in taking 18 males. Wishing to get females and more specimens Mr.

In an effort to select a nomenclature for the wing veins that would meet with the approval of students in this countr3^, at least, an exten-

No abstract

PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 37. viduals seek insect food at a considerable elevation and hence escape observation. Mr. R. A. Muttkowski observed, at Milwaukee, several individuals of a species which he believed was not illinoiensis resting in close proximity to each other on a tree branch at a considerable elevation. The height of the season for the species of Macromia seems to lie between the spring and autumn dragonfly seasons, when any possible competition with members of the same order would be at a minimum. Along the Wabash River during a hot day in early August odonate life seems almost suspended. It is on such a day that the collector may hope to find the largest number of individuals of this genus.

No abstract