On July 9, 1892, I found in the Grand Canon, Arizona on the Hance trail, near the Colorado River, numbers of the green galls of this species on the narrow-leafed Salix sp. (probably S. longifolia.) Three that were picked on this date measure 19 to 20 mm. in length, and 11 mm. in width on widest portion near base. They preserve their light green colour, except for their whitish, thick pubescence. Some last year's galls were also found in the canon on the willows near the stone cabin. They measure 16 to 17 mm. in length, and 10 to 11 mm. in width. They are more spread out apically; therefore not conical in outline, and are reddish-brown in colour, probably from being weathered.