The embryology and metamorphosis of the Macroura . 57. Fig. 112. Oblique transverse section, through egg-nanplius of a common shore crab of Beaufort,North Carolina, jirobably Sesarma. x286. Fig. 113. Median longitudinal section, through a similar embryo. The egg membranes are notnaturally shown. The yolk is diagramatically represented. Wandering cells occurin it (1. C), and in Fig. 113 degenerative products {Deg.) are met with. x286. REFERENCE LETTERS. A., anus. A. (I), auteuiial (I), antennnlar ;., thoracico-abdoraiaal , eggshell. Dei/., degenerative cell
The embryology and metamorphosis of the Macroura . 57. Fig. 112. Oblique transverse section, through egg-nanplius of a common shore crab of Beaufort,North Carolina, jirobably Sesarma. x286. Fig. 113. Median longitudinal section, through a similar embryo. The egg membranes are notnaturally shown. The yolk is diagramatically represented. Wandering cells occurin it (1. C), and in Fig. 113 degenerative products {Deg.) are met with. x286. REFERENCE LETTERS. A., anus. A. (I), auteuiial (I), antennnlar ;., thoracico-abdoraiaal , eggshell. Dei/., degenerative cell , ectoderm. GL, ectoblast ofnenral , cells, foriuiug rudimentary , hind , , mandibular , mesoblast below 0., optic , Lr., optic lobe. O. S. ( S. O. G., rudiinentary «rf., , C, wandering 114-125 mark the plants of the. transverse and longitudinal sections represented on Jls. XLI-XLIII. Plate XL Fi^.109. SOG. Ml). O £? o oo op
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Keywords: ., bookauthor, bookcentury1800, bookdecade1890, booksubjectcrustacea
