. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. prz tel. terl2 A B Fig. 341.—Scolopendra cingulata. A, germ band. B, lateral aspect, later stage than that of Fig. 342. (ant) Antenna, {dm) Membrana dorsalis. (Ir) Labrum. (md) Mandible, (mpd) Maxilliped. (mx) Maxilla, (p) Leg. (pren) Preantenna. (prz) Proliferation zone, () Sternite. (tel) Telson. (ter) Tergite. (vm) Membrana ventralis. (Adapted from Heymons.) band," more segments appear, and the
. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. prz tel. terl2 A B Fig. 341.—Scolopendra cingulata. A, germ band. B, lateral aspect, later stage than that of Fig. 342. (ant) Antenna, {dm) Membrana dorsalis. (Ir) Labrum. (md) Mandible, (mpd) Maxilliped. (mx) Maxilla, (p) Leg. (pren) Preantenna. (prz) Proliferation zone, () Sternite. (tel) Telson. (ter) Tergite. (vm) Membrana ventralis. (Adapted from Heymons.) band," more segments appear, and the anal opening becomes visible close to the posterior end. In front of the crescent-shaped oral invagination the clypeus develops as an unpaired lobe, and at some distance posterior to this invagination the rudiments of the antennae appear. Between the posterior margin of the antennal segment and the anterior margin of the mandibular seg- ment the intercalary segment is apparent, though it does not develop so fully as the other metameres, nor will it bear appendages. Two maxil- lary, one maxillipedal, 21 rump, and a relatively large, cordate telson, or anus-bearing segment, make up the remainder of the 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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