. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HOST-SPECIFIC PLANULA SETTLEMENT 575. FIGURE 1. Protruding cnidocils distributed fairly uniformly in the epidermis of a fully developed planula. The cavity within the planula appears as a lighter area centered nearer the anterior end (left). The entoderm is correspondingly thicker toward the posterior end; scale bar — 50 /A. FIGURE 2. Optical section of a planula showing a concentration of nematocyst capsules in the posterior entoderm (bottom third). (Fig. 2-5 are all to the same scale and the nematocyst capsules depicted in


. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HOST-SPECIFIC PLANULA SETTLEMENT 575. FIGURE 1. Protruding cnidocils distributed fairly uniformly in the epidermis of a fully developed planula. The cavity within the planula appears as a lighter area centered nearer the anterior end (left). The entoderm is correspondingly thicker toward the posterior end; scale bar — 50 /A. FIGURE 2. Optical section of a planula showing a concentration of nematocyst capsules in the posterior entoderm (bottom third). (Fig. 2-5 are all to the same scale and the nematocyst capsules depicted in these figures all appear similar) ; scale bar = 25 //.. FIGURE 3. Epidermal distortion formed by pulling an adhering planula away from a frag- ment of sabellid tube; scale bar — 25 ja. FIGURE 4. Nematocyst discharged into a fragment of sabellid tube. A portion of the em- bedded thread can be seen leading down and left from the capsule; scale bar — 25 //.. FIGURE 5. Discharge epidermal nematocysts; scale bar = 25 t*.. 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