. The Biological bulletin. Biology; Zoology; Marine biology. Fig. 2. Primary gonad of protandric female, with cortical layer of yolk- forming ovocytes and numerous ripe spermatozoa (sps) in the lumen of the follicle; re, residual cells (mainly smaller ovocytes) which form the germinal cells of the gonad after the first ovulation; other letters as in Fig. Fig. 3. Later stage in the gonad of protandric female preceding the first spawning period, showing the cortical layer of large ovocytes (oc) and small residual cells, with a few spermatocytes (spc), spermatids, and spermatozoa from the ini
. The Biological bulletin. Biology; Zoology; Marine biology. Fig. 2. Primary gonad of protandric female, with cortical layer of yolk- forming ovocytes and numerous ripe spermatozoa (sps) in the lumen of the follicle; re, residual cells (mainly smaller ovocytes) which form the germinal cells of the gonad after the first ovulation; other letters as in Fig. Fig. 3. Later stage in the gonad of protandric female preceding the first spawning period, showing the cortical layer of large ovocytes (oc) and small residual cells, with a few spermatocytes (spc), spermatids, and spermatozoa from the initial male phase remaining in the lumen. previously completed the male phase and showed only female char- acteristics, both types of sexual cells were present in nearly every one of more than two hundred gonads cut in serial sections. The youngest 21. 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 Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
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