Published in Abhandlungen Der Senckenbergischen Naturforschenden Gesellschaft, in 1900, in volume 25, pages 19-80

Published in Abhandlungen der Senckenbergischen Gesellschaft, in 1900, in volume 25, pages 139-202

Published in Abhandlungen Der Senckenbergischen Naturforschenden Gesellschaft, in 1900, in volume 25, issue 1, pages 235-242