Ravn, 1907: Pl. 7 figs. 5a-b.

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Ravn, 1907: Pl. 7 figs. 5a-b.

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith