Mentioned only by Wedgwood in his entry for Keraulophon, in which he says: �The Kuerlofon sometimes found in Spanish organs (e.g., Seville Cathedral, Aquilino Amézua) is probably a cross between a Dolce and a Salicional, or merely a species of Waldflöte. One synonym for Waldflöte is Flautado Kuerolofón.
None known, other than Wedgwood's reference above.