Sponges. 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. Memoirs of the Museum of Comparative Zoology of Harvard College, xxx(No. 1) 1904: 161 pp., 26 pls., with explanations. Abstract by Lendenfeld in Zool. Zentrlbl. xi, pp. 817, 818. 130 [Zoological Record Volume 41]