. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. 58 THE CIRCULATORY SYSTEM [ Fig. 71. I'orsal vessel of larva ol Aeschna ( x4|). anterior ligament; alary muscle; dorsal aorta; ol osteole; ost ostia; pc pericardium (dotted outline); posterior ligament; Th thorax; v valves of heart; 1-10 abdominal segments; i-viii chambers of heart. After 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 rese
. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. 58 THE CIRCULATORY SYSTEM [ Fig. 71. I'orsal vessel of larva ol Aeschna ( x4|). anterior ligament; alary muscle; dorsal aorta; ol osteole; ost ostia; pc pericardium (dotted outline); posterior ligament; Th thorax; v valves of heart; 1-10 abdominal segments; i-viii chambers of heart. After 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 Tillyard, Robin John, 1881-1937. Cambridge [Eng. ] : University Press
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