F.  Skell, ?Ein Massenauftreten von Protoparce convolvuli var. indica in Ost-Sumatra?, Mitteilungen der Münchener Entomologischen Gesellschaft, vol. 4, pp. 56-61, 1913.

H. A.  Ballou, ?Notes on insect pests in Antigua?, Bulletin of Entomological Research, vol. 4, pp. 61-65, 1913.