. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. Fig. 157. Basal portion of wing of Archithemis hrodiei Geinitz {x2-6), Lias, Dobbertin. After Handlirsch. Fig. 158. Portions of leg and wing of Tarsophlebia westwoodi Giebel ( x 1), Lias, Cheltenham, q quadrilateral; , the four joints of the tarsus; tih tibia. After Fiff. 159. Wings of Heterophlehia dislocnta Brodie and Westwood ( X 2), Lias, Cheltenham. After Westwood. The Heterophlebiinae (fig. 159) were fairly closely related to the living Epiophlebia of Japan. The fore-wing quadrilateral resembled that of
. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. Fig. 157. Basal portion of wing of Archithemis hrodiei Geinitz {x2-6), Lias, Dobbertin. After Handlirsch. Fig. 158. Portions of leg and wing of Tarsophlebia westwoodi Giebel ( x 1), Lias, Cheltenham, q quadrilateral; , the four joints of the tarsus; tih tibia. After Fiff. 159. Wings of Heterophlehia dislocnta Brodie and Westwood ( X 2), Lias, Cheltenham. After Westwood. The Heterophlebiinae (fig. 159) were fairly closely related to the living Epiophlebia of Japan. The fore-wing quadrilateral resembled that of the latter genus, but was considerably wider. The hind-wing had a peculiarly stretched and distorted quadri- lateral, with a horizontal cross-vein separating off a lower triangular portion. This formation was essentially unstable, since the upper side of the "triangle" was not continued by any main vein, as it. 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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