"Colibríes Panamá." . . . . . . . . . . . "Description of a New Genus and Species of Hummingbird from Panama" . "Description of a new genus and species of hummingbird from Panama" . . . "Description of a new genus and species of humming bird from Panama" . . "Description of a new genus and species of humming-bird from Panama, by E. W. Nelson" . . . . . . . . .