Amongst the Melanidae of the Leyden Museum, many species were unknown to me, so I submitted them all to the judgment of the late Dr. A. Brot, who declared many of them to be doubtful, which I have indicated in the Catalogue of the Museum by a note of interrogation; a few others, however, seemed also to this much regretted authority to be new to science and so I ventured to describe them as follows.