Published in Revue zoologique africaine, in 1921, in volume 8, pages 87-106
Published in Revue zoologique africaine, in 1921, in volume 9, pages 1-22
Published in Revue Zoologique Africaine, in 1921, in volume 9, pages 29-32
Published in Revue Zoologique Africaine, in 1921, in volume 9, pages 87-192
Published in Rev. zool. afr., in 1921, in volume 9, pages 193-196
Published in Revue Zoologique Africaine, in 1921, in volume 9, pages 235-251
Published in Revue Zoologique Africaine, in 1921, in volume 9, pages 252-253