. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PALPS NEWLY SECRETED HALF CYLINDER OF TUBE. FIGURE 3. Tube construction. A. Worm secreting addition to tube. B. Head of worm secreting first part of a partition. Anterior median region of head is forced through the initially open central area of partition. C. Worm in process of removing a partition by cutting its junction with the tube wall with the heavy blade-like 4th seta. rotated. It is during this rotation, which lasts only about five seconds, that the partition is secreted. The partition is at first shaped like a washe
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PALPS NEWLY SECRETED HALF CYLINDER OF TUBE. FIGURE 3. Tube construction. A. Worm secreting addition to tube. B. Head of worm secreting first part of a partition. Anterior median region of head is forced through the initially open central area of partition. C. Worm in process of removing a partition by cutting its junction with the tube wall with the heavy blade-like 4th seta. rotated. It is during this rotation, which lasts only about five seconds, that the partition is secreted. The partition is at first shaped like a washer, having a large hole in the center. The hole results from the absence of glands along the front median margin of the head. This area of the head is located in the center of the partition during the rotating movement and at the end of the rotation pro- trudes through the partition opening (Fig. 3, B). Following the initial secretion of the partition, the head is flexed and the worm moves the glandular surface back and forth over the partition. This final action apparently reinforces the partition and probably accounts for the reduction. 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. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
