. Annual report of the Regents. New York State Museum; Science. 556 NEW YORK STATE MUSEUM S. umbra t a the last joint of both palpi is distinctly pediform (fig. 34, ^6); I have not been able to examine tlie palpi with any degree of satisfaction in any specimen of S. fuscata, but according to VVes- mael's figure^ the terminal segment should be simply conic. During the first week of our stay at Saranac Inn we scraped the surface water supply trough in the hatchery, and in the scrapings found about IOC small fresh-water sponges. A few of the larvae of this species were found on the sponges. Short
. Annual report of the Regents. New York State Museum; Science. 556 NEW YORK STATE MUSEUM S. umbra t a the last joint of both palpi is distinctly pediform (fig. 34, ^6); I have not been able to examine tlie palpi with any degree of satisfaction in any specimen of S. fuscata, but according to VVes- mael's figure^ the terminal segment should be simply conic. During the first week of our stay at Saranac Inn we scraped the surface water supply trough in the hatchery, and in the scrapings found about IOC small fresh-water sponges. A few of the larvae of this species were found on the sponges. Shortly the cocoons began to appear on the sides of the supply trough, and in such numbers that it was evident that the larvae were coming in from the pipes. The cocoons were located, some inside the supply troughs on the smooth, tarred, vertical sides just above the water, some on the upper edges, some on the sides and edges of the hatching troughs below, but mostly on the outside of the supply troughs and in the angles which they make with the hatching troughs, or in the thread grooves at the base of the faucets. Each larva spins over itself, a hemispheric cover of close woven silk (pi. 12, fig. ii), attached by its edges to the supporting sur- face, and a complete inner co- coon of considerably smaller size, likewise close woven. Larvae of this species taken from unfinished cocoons and placed in a vial spun new co- coons in the corners of it under observation. It was interesting to watch them weaving back and forth their anal spinnerets, as the threads were laid down. Two larvae of this species, taken just as they were leaving the water June 21 and placed in a vial plugged with cotton, spent at least 12 hours in spinning their cover and cocoon, and remained inactive larvae 24 hours longer. Then they transformed to pupae, which remained suffi-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an
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