. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 82 CADET HAND AND JOHX R. HENDRICKSOX if four are present there are always a large one and three successively smaller ones arranged as in Text Fig. 3. In our specimens the larger medusa buds were seen to pulsate vigorously for a day or two before they were released. Many of the gonozooids possessed 1, 2 or 3 immature buds with no pulsating medusae. The nematocysts of the gonozooids are the same as those of the gastrozooids except that no small microbasic euryteles are present. f. The medusae In the course of this study we ha
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 82 CADET HAND AND JOHX R. HENDRICKSOX if four are present there are always a large one and three successively smaller ones arranged as in Text Fig. 3. In our specimens the larger medusa buds were seen to pulsate vigorously for a day or two before they were released. Many of the gonozooids possessed 1, 2 or 3 immature buds with no pulsating medusae. The nematocysts of the gonozooids are the same as those of the gastrozooids except that no small microbasic euryteles are present. f. The medusae In the course of this study we have seen 25 released medusae. With a single exception, each medusa possessed four primary radial canals, the exception having. TEXT FIGURE 4. A gonozooid of Pruboscidactyla sp. bearing medusa buds in different stages of development. five. Plate 2, Figure 6, is a photograph of the living, one day old, pentamerous medusa, and Plate 2, Figure 7 illustrates one of the tetramerous specimens. The medusa possessing five canals was noted before its release and occurred on a gonozooid which also bore normal tetramerous buds. Text Figure 5 shows a medusa as it appears shortly after release, at which time the medusae are about mm. tall and mm. in diameter. There are four interradial cnidothylacies (nematocyst sacs) which contain large and small macrobasic euryteles, and four tentacles possessing desmonemes and small macrobasic euryteles. The medusa with five radial canals had five tentacles. In no case in the immature medusae which we observed did we find any sign of branching of the radial canals. The ring. 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, 1870-1
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