In 'The Ibis: A Quarterly Journal of Ornithology,' Volume VI, Eighth Series, 1906, In two parts - Part I, pp. 57-84 and Part II, pp. 225-256. With hand colored lithograph of Propasser Waltoni by J.G. Keulemans.The complete volume in four numbers bound in publisher's red cloth with additional articles and plates, including articles by Burtilin on the breeding grounds of the Rosy Gull and Hellmayr on A Revision of the Species of the Genus Pipra. Original publisher's red cloth, bumped corners, cracked at rear inner hinge.