. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. SOME JAPANESE ECHINODERMS. 549. Pig. 2.—Sketches showing the variation in shape of the larva of Laganum 75 dccagonale. — of the egg. The larval skeleton is, of course, rudimentary, but is otherwise in accordance with the typical skeletal structure of Clypeastroid-larvae. It is worth pointing out that, in spite of the large size of the eggs, the cleavage is total and quite regular. A feature not hitherto seen in Echinoids, if I remember aright, is that the embryo in the blastula stage, before it leaves the egg-membrane, has the ect
. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. SOME JAPANESE ECHINODERMS. 549. Pig. 2.—Sketches showing the variation in shape of the larva of Laganum 75 dccagonale. — of the egg. The larval skeleton is, of course, rudimentary, but is otherwise in accordance with the typical skeletal structure of Clypeastroid-larvae. It is worth pointing out that, in spite of the large size of the eggs, the cleavage is total and quite regular. A feature not hitherto seen in Echinoids, if I remember aright, is that the embryo in the blastula stage, before it leaves the egg-membrane, has the ectoderm strongly folded, much as it occurs in some starfishes {Ltiidia ). The forma-. 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 Nihon Do?butsu Gakkai; To?kyo? Do?butsu Gakkai. Tokyo : Societas
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Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1897
