The embryology and metamorphosis of the Macroura . with Fig. 106. The thoracico- abdominal fold is now distinctly directed forward, an i is overgrowing the sternal area between it and the mouth. The stomodaium is a bent tube. 126. Transverse section, cutting proctodteum. From an embryo of about the same age as that represented in Fig. 106. 127. Transverse section of embryo and entire egg oa level with anus, showing wandering cells (T. C, r. ). x7i. _ REFERENCE LETTERS. J., auiil iuvaginatioii. Ab., abdomen. A. Y. S., altered food yolk. CVi., eggshell. ^ Set., Ep., ectod
The embryology and metamorphosis of the Macroura . with Fig. 106. The thoracico- abdominal fold is now distinctly directed forward, an i is overgrowing the sternal area between it and the mouth. The stomodaium is a bent tube. 126. Transverse section, cutting proctodteum. From an embryo of about the same age as that represented in Fig. 106. 127. Transverse section of embryo and entire egg oa level with anus, showing wandering cells (T. C, r. ). x7i. _ REFERENCE LETTERS. J., auiil iuvaginatioii. Ab., abdomen. A. Y. S., altered food yolk. CVi., eggshell. ^ Set., Ep., ectoderm. Gl., ganglionic rudiment. H., rudiment of heart. Bg., intestine. Lb., labrum. Mb., embryonic molt. .!/««., mesoderm. Mo., month. Pd., region of proctod;eal invagination. «.,s., products of cell degeneration. S. C, wandering cells, probably in early stages of degeneration. ?S. 0. G., rudiment of brain. St. A., sternal area. Std., stomoda-um. r., yolk. ¥. C, Y. , wandering cells. Y. S., .yolk spherules. Vac, vacuole. PlaU XUll
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Keywords: ., bookauthor, bookcentury1800, bookdecade1890, booksubjectcrustacea
