Capheira Ludwig 1893

Ludwig 1893. [Title unknown.] Zoologischer Anzeiger, xvi 1893: Unpaginated

Ludwig 1894. Reports on an exploration off the west coasts of Mexico, Central and South America, and off the Galapagos Islands, in charge of Alexander Agassiz, by the U. S. Fish Commission Steamer "Albatross," during 1891, Lieut. Commander Z. L. Tanner, U. S. N., commanding, xii. The Holothurioidea. Memoirs Museum Harvard, xvii(No. 3) 1894: 183 pp.