. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. amf- Fig. 31.—Development and fate of the embryonic envelopes. A, gastrulation. B, formation of amniotic fold. C, completion of serosa (ser). D, fusion of amnion and serosa (am. ser). E, rupture of amnion and serosa. F, shrinkage of envelopes, (am) Amjiion. (am. cav) Amniotic cavity, (amf) Amniotic fold, (ect) Ectoderm, {gastr) Gastrula furrow. (&0O Ganglion. (iJ) Inner layer, (ip) Lateral ectode
. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. amf- Fig. 31.—Development and fate of the embryonic envelopes. A, gastrulation. B, formation of amniotic fold. C, completion of serosa (ser). D, fusion of amnion and serosa (am. ser). E, rupture of amnion and serosa. F, shrinkage of envelopes, (am) Amjiion. (am. cav) Amniotic cavity, (amf) Amniotic fold, (ect) Ectoderm, {gastr) Gastrula furrow. (&0O Ganglion. (iJ) Inner layer, (ip) Lateral ectodermal plate, (mgre) Mid-gut epithelium, (ser) Serosa, (y) Yolk. germ band. The embryos of many insects remain at the surface during development, in which case we have the superficial type. Certain forms are intermediate in type, as with some Coleoptera in which the anterior part of the embryo remains superficial but the caudal end is invaginated. 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
