. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 4 (PL III), Stage C. —Median sagittal section of A. spinifer. Lg. = mm. Mesoblastic somites =21. < PM. FIG. 5 (PI. Ill), Stage D.— Median sagittal section of A. spinifer. Lg. — mm. x 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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. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 4 (PL III), Stage C. —Median sagittal section of A. spinifer. Lg. = mm. Mesoblastic somites =21. < PM. FIG. 5 (PI. Ill), Stage D.— Median sagittal section of A. spinifer. Lg. — mm. x 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