The readers of my work entitled “Muséum des Pays-Bas” will recollect that I identified with the Gallinula olivacea of Meyen, inhabiting the Philippine islands, a bird collected by the late Dr. Bernstein, in the islands of Halmahera and Ternate, and which was afterwards stated to live equally in the isles of Amboina and Mysole. This bird was designated by me as belonging to a particular subdivision characterized by its very small triangular frontal plate. Mr. Frank, the well known dealer in zoological objects at Amsterdam, a man who, during more than half a century, with an unaltered integrity, has procured for our Museum many thousands of the most valuable objects, sent to me the skin of a bird, recently collected in New-Guinea, which appears to belong to an undescribed species of Gallinula.