. Annals. Entomology. 1911] May-Flies of Fall Creek, N. Y. 97 dotted lines the angles of the bottom, back, sides, front and cover. The laps on the sides should be folded over the cut edges of the bottom and the front and then securely fastened with solder. The cover may then be pushed down and secured by a wire catch or by a rubber band placed about the cage. When in use a stone should be placed in the bottom of the cage. This will serve the double purpose of keeping the cage upright and of providing a foot hold for the nymphs enclosed within it. In Fig. 1 the completed cage is shown inserted
. Annals. Entomology. 1911] May-Flies of Fall Creek, N. Y. 97 dotted lines the angles of the bottom, back, sides, front and cover. The laps on the sides should be folded over the cut edges of the bottom and the front and then securely fastened with solder. The cover may then be pushed down and secured by a wire catch or by a rubber band placed about the cage. When in use a stone should be placed in the bottom of the cage. This will serve the double purpose of keeping the cage upright and of providing a foot hold for the nymphs enclosed within it. In Fig. 1 the completed cage is shown inserted in the water. A represents the stone placed in the Fig. I. Cage for rearing May flies, showing position in the water. Fig. 2. Diagram to show construction of cage. It is best not to insert the cage much more than two inches in the water except where a lowering in the stream is expected. Nymphs confined in this cage will naturally crawl up the slop- ing side for and the sub-imagoes will find an easy grade on which to walk up to the light. The sub-imagoes will sit on the under side of the cover, but if it be lifted with some care the insects may be safely transferred from the cage to the collecting Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Entomological Society of America. Baltimore [etc. ]
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