On a collection of Oligochaeta mainly from CeylonPublished in Spolia Zeylandica, in 1913, in volume 8, pages 251-276Notes on the Holothurioidea of the Indian OceanPublished in Spolia Zeylandica, in 1913, in volume 9, pages 49-101
Notes on the Holothurioidea of the Indian OceanPublished in Spolia Zeylandica, in 1913, in volume 9, pages 49-101