Amongst a collection of birds, collected in the Timor Group of Islands and presented to the Museum in 1882 by Mr. van Lansberge, the late Governor General of the Netherlands’ Indies, I found a hitherto undescribed species of Pericrocotus which I propose to name after the Donator who has done very much for natural science and especially for the benefit of the Leyden Museum. Having lately (Notes 1886, p. 67) been obliged to suppress the species Ardea Lansbergei Schl., it is quite a satisfaction to me to bestow this specific name upon another species. In a next number of the »Notes” I hope to give a detailed list of the very important collection which contains, amongst other rarities, aforesaid new species.