Notes on the birds of East Africa

Published in 1922 in Novitates Zoologicae, volume 29, on pages 1-246

A monograph of the Saturnian subfamily Ludiinae

Published in 1922 in Novitates Zoologicae, volume 29, on pages 249-326
Authors: Karl Jordan

New and little-known Geometridae

Published in 1922 in Novitates Zoologicae, volume 29, on pages 327-363
Authors: