CONTENTS. 



REPORTS on the Scientific Results of the Expedition to tlie Eastern Tropical Pacific, 

 in charge of Alexander Agassiz, by the U. S. Fish Commission Steamer "Albatross," 

 from October, 1904, to March, 1905, Lieut. Commander L. M. Garrett, U. S. N., 

 Commanding, and of other expeditions of the "Albatross," 1S91-1899. XXIX. The 

 Sponges. 3. Hexactinellida. By Robert von Lendenfeld. 397 pp. 109 Plates. 

 June, 1915. 



