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Updated: May 16, 2025
A trifling character in the disc deserves notice; the barbs, for a space along one of the concentric zones are more or less destitute of their barbules, so that a part of the disc is surrounded by an almost transparent zone, which gives it a highly finished aspect. The lower margin or base of the dark-blue centre of the ocellus is deeply indented on the line of the shaft.
As to the structure of these plumes, they combine firmness, lightness, and mobility, the barbs and barbules knitting the more flexible parts together, so that they do not separate, but only expand, when the wing is unfolded. While the primary purpose of wings is flight, there is quite a number of notable exceptions.
This fish has four long barbules in the upper jaw, and two in the lower: the air-bladder, when dried, forms a superior quality of isinglass, and the flesh of this fish is excellent. I have frequently seen the bayard sixty or seventy pounds' weight, therefore I was not proud of my catch, and I recommenced fishing.
C. Cooke called my attention to certain little mites which were situated on the narrow groove between the main stem of the barb and the outer edge of the barbules of the feathers of the Downy Woodpecker, and subsequently we found the other forms in the down under the feathers.
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