CONTENTS. 



No. 2. HAWAIIAN AND OTHER PACIFIC ECHINI. Based upon Collections made 

 by the U. S. Fish Commission Steamer "Albatross" in 1902, Commander Chauxcky 

 Thomas, U. S. N., Commanding, and in 1906, Lieut. Commander L. M. Gakrett, 

 U. S. N., Commanding. The Salenid^, Arbaciad^, Aspidodiadematid^, and 

 DiADEMATiD-E. By ALEXANDER Agassiz and Hubert Lyman Clark. 92 pp. 17 

 plates. September, 1908. 



