. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. irich Fig. 311.—Diacrisia Inner fold of amnion, (nc) Nerve cord, cell, {y) Yolk. Cross section through posterior end of 82-hour embryo, {am) {hi) Blood cells. (/) Fat body, {malp) Malpighian tubules. {prod) Proctodaeum. {tr) Tracheal invagination, {trich) Trichogen two ribbons of the mid-gut epithelium fuse ventrad of the yolk (Fig. 312, mge); at 84 hours and a little later the strips of mesoderm also fuse.
. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. irich Fig. 311.—Diacrisia Inner fold of amnion, (nc) Nerve cord, cell, {y) Yolk. Cross section through posterior end of 82-hour embryo, {am) {hi) Blood cells. (/) Fat body, {malp) Malpighian tubules. {prod) Proctodaeum. {tr) Tracheal invagination, {trich) Trichogen two ribbons of the mid-gut epithelium fuse ventrad of the yolk (Fig. 312, mge); at 84 hours and a little later the strips of mesoderm also malp Fig. 312.—Diacrisia Cross section of abdomen of S4-houi embryo, {am) Amnion. {hi) Blood cells, {g) Gonad, {malp) Malpighian tubules, {mge) Mid-gut epithelium. Inc) Nerve cord, {oen) Oenocytes. {splm) Splanchnic mesoderm, {trich) Trichogen cell. Shortly after the embryo rotates on its longitudinal axis, both these layers have met and fused on the dorsal side. The fat body developing. 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 Johannsen, O. A. (Oskar Augustus), 1870-1961; Butt, Ferdinand Hinckley, 1899-. New York, London, McGraw-Hill Book Company, inc.
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
