. The biology of insects. Insects -- Biology. 360 THE BIOLOGY OF INSECTS. Fig. 80.—Stages in the paedogenetic development of Miastor ameri- cana. a, early stage showing a few somatic cells {bm), a group of nutritive cells (^0 and one "pole" primordial germ-cell (g); b, later stage with two "pole" germ-cells {g), somatic cells {hn) toward edge of yolk; c, blastoderm {bm) enclosing yolk, and group of eight germ-cells {g) ; d, embryo with head-region (e), segmenting body, amnion {an) and germ-cells {g) at hinder end. All highly magnified. After R. W. Hegner {jfouni. Morph. xxv
. The biology of insects. Insects -- Biology. 360 THE BIOLOGY OF INSECTS. Fig. 80.—Stages in the paedogenetic development of Miastor ameri- cana. a, early stage showing a few somatic cells {bm), a group of nutritive cells (^0 and one "pole" primordial germ-cell (g); b, later stage with two "pole" germ-cells {g), somatic cells {hn) toward edge of yolk; c, blastoderm {bm) enclosing yolk, and group of eight germ-cells {g) ; d, embryo with head-region (e), segmenting body, amnion {an) and germ-cells {g) at hinder end. All highly magnified. After R. W. Hegner {jfouni. Morph. xxv, 1914).. 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 Carpenter, George H. (George Herbert), 1865-1939. New York, The Macmillan Company
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