Last month the Leyden Museum received a small number of birds, presented by Dr. H. ten Kate, who bad collected them during his recent voyage through the above mentioned islands. Though most of the 29 species are already mentioned in the list given by Wallace, P. Z. S. 1863, p. 484, I do not hesitate to give an enumeration of ten Kate’s collection, the more as it has given me the chance of describing a new species of Tropidorhynchus, , years ago discovered by Forsten and sent over since by Mr. van Lansberge, Prof. Max Weber and now contained in ten Kate’s recent collection.