. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. Fig. 97. Internal reproductive, organs and alimentary canal of Petalura gigantea Leach, $, dorsal view ( x 1 J). an anus; as accessory sac; b bursa; gz gizzard; h hind-gut; mg mid-gut; mp Malpighian tubiiles; ovd oviduct; ovy ovary; 1-10 abdominal segments. Original, from a dorsal Fig. 98. Posterior part of fig. 97, en- larged (x4), and with alimentary canal removed, ng^, ng^ seventh and eighth ganglia; ov eggs; tr tracheae. Other references as in fig. 97. Original. this, a thick chitinous outer shell or chori
. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. Fig. 97. Internal reproductive, organs and alimentary canal of Petalura gigantea Leach, $, dorsal view ( x 1 J). an anus; as accessory sac; b bursa; gz gizzard; h hind-gut; mg mid-gut; mp Malpighian tubiiles; ovd oviduct; ovy ovary; 1-10 abdominal segments. Original, from a dorsal Fig. 98. Posterior part of fig. 97, en- larged (x4), and with alimentary canal removed, ng^, ng^ seventh and eighth ganglia; ov eggs; tr tracheae. Other references as in fig. 97. Original. this, a thick chitinous outer shell or chorion is deposited by the follicle cells, which imprint their faint polygonal outhne upon the structure. The eggs are always elongated when first formed, but may become rounded in some forms, when fully completed [9i].. 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
Size: 1130px × 2212px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambridgeenguniver
