On a Freshwater Medusa from the Limpopo River System, with a Note on a Parasitic Infusorian

Inscribed 'K. H. Barnard fr. G. A." to upper cover. Keppel Barnard was a famous taxonomist and curator of the South African Museum. George Arnold was curator of the Rhodesia Museum. Offprint from the 'Proceedings of the Zoological Society of London,' March 1915. 222 x 152 mm; printed blue wrappers; pp. [71-76]; plate. Earlier owner's name, with institutional hand-stamp and code label, to upper cover; wrappers somewhat foxed, some foxing elsewhere. Good to very good. Identification of a freshwater jellyfish species from the tributaries of the Limpopo.