The Danish Expedition to Siam 1899-1900. III. Chelonethi. An Account of the Indian false-scorpions together with studies on the anatomy and classification of the order.
Copenhagen, Høst & Søn, 1906. 4to. Uncut in orig. printed wrappers. 214 pp., 1 map and 4 engraved plates with many figs.
(Mémoire de l'Academie Royale des Sciences et des Lettres de Danemark, Copenhague).