Abstract
The respiratory system of Fortuynia maculata Luxton (Fortuyniidae) consists of two cerotegument plastrons connected to the tracheae associated with the leg coxae via the acetabular cavities and to brachytracheae associated with the bothridia via paired van der Hammen's organs. The van der Hammen's organs allow oxygen gas to pass from the plastrons to the brachytracheae.