K.  Jordan, ?On Polyptychus pygarga and some allied species (Lep., Sphingidae)?, Novitates Zoologicae, vol. 35, pp. 187-191, 1929.

K.  Jordan, ?The status of Platysphinx bourkei Trimen (1910)?, Novitates Zoologicae, vol. 27, pp. 163-166, 1920.

K.  Jordan, ?Some new African Sphingidae?, Novitates Zoologicae, vol. 27, pp. 167-170, 1920.

K.  Jordan, ?On some African Sphingidae?, Novitates Zoologicae, vol. 27, pp. 510-512, 1920.