. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. Fig. ;—Section through a coelomic sac of Leptinotarsa. (cbl) Cardioblasts. {cod) Coelom. {ect) Ectoderm, (g) Ger- marium of the gonad, (nc) Nerve cord. (sp) Spiracle, (splm) Splanchnopleure. (sus) Suspensorium. (x) ventral strand. (From Wheeler.). Fig. 54.—Female gonad of Blattella. differentiated into terminal filaments (</). (Adapted from Snodgrass.) X (gc) Germ cells, (sus) Dorsal suspensorium
. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. Fig. ;—Section through a coelomic sac of Leptinotarsa. (cbl) Cardioblasts. {cod) Coelom. {ect) Ectoderm, (g) Ger- marium of the gonad, (nc) Nerve cord. (sp) Spiracle, (splm) Splanchnopleure. (sus) Suspensorium. (x) ventral strand. (From Wheeler.). Fig. 54.—Female gonad of Blattella. differentiated into terminal filaments (</). (Adapted from Snodgrass.) X (gc) Germ cells, (sus) Dorsal suspensorium, (x) Ventral strand continuous with duct (d). The germ cells at this stage, as described by Heymons in Blattella, are evenly distributed throughout the length of the median part of the gonad, and the organ increases in thickness owing to their 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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