on Dendrocolaptidae, [484];
on Formicariidae, [488];
on Galbulidae and Bucconidae, [445] n.;
on Icteridae, [579];
on incubation of Ostrich, [29];
on classification of Passeres, [467];
on Penguins, [56] n., [57] n.;
on Picariae, [376];
on Pipridae, [477] n.;
on Rhamphastidae, [455];