. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 116 G. E. MACGINITIE opening in a sheet from the distal ends to the body of the worm, whence it is carried posteriorly as a bag by the ciliated groove to the dorsal cupule, where the closed end of the mucous bag is taken into the cup or concave surface of this organ. This creates an elongated bag of mucus, the anterior end of which is fastened to or continuous with the glands lining the inner surface of the aliform notopodia, and the closed posterior end of which is held by and rolled up within the dorsal cupule. A current o
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 116 G. E. MACGINITIE opening in a sheet from the distal ends to the body of the worm, whence it is carried posteriorly as a bag by the ciliated groove to the dorsal cupule, where the closed end of the mucous bag is taken into the cup or concave surface of this organ. This creates an elongated bag of mucus, the anterior end of which is fastened to or continuous with the glands lining the inner surface of the aliform notopodia, and the closed posterior end of which is held by and rolled up within the dorsal cupule. A current of water is now maintained through the burrow by the activity of the three fans just posterior to the dorsal cupule. Since. vs. FIG. 1. A, Chaetopterus variopedatus within its tube, feeding; B, dorsal surface of anterior portion of worm, , aliform notopodium; c., cirrus;/., fans;/.6., food ball being rolled up within the dorsal cupule; , dorsal ciliated groove; m., mouth; , mucous bag; , peristomial funnel; , ventral suckers. the walls of the burrow are completely in contact with the body of the animal and the aliform notopodia at the anterior end of the mucous bag, it is necessary for the current of water to pass into the bag, out through its sides, and thence along the body of the worm, and ulti- mately to issue from the burrow at th& opposite end. While the current is being maintained by the fans, mucus is continuously secreted at the anterior end of the bag, and, at the same rate, the posterior end is rolled into a ball within the dorsal cupule by the cilia of its inner surface. Since all water entering the burrow while a mucous bag is. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass.
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
