KEPORT ON THE HEXACTINELLID SPONGES COL- 

 LECTED BY THE UNITED STATES FISHERIES STEAM- 

 ER "ALBATROSS " IN THE NORTHAVESTERN PACIFIC 

 DURING THE SUMMER OF 1906 



By Yaichiro Okada 

 Zoological Institute, Tokyo University of Science and Arts, Tokyo, Japan 



The large number of hexactinellid sponges collected by the United 

 States Fisheries steamer Albatross during her cruise in the north- 

 western Pacific Ocean in 1906 were originally assigned for study 

 and report to the late Professor Ijima by the United States Bureau 

 of Fisheries. Two years before his death, in March, 1920, the 

 specimens were placed in my hands for joint report with Doctor 

 Ijima, at which time the material had been practically untouched. 

 "With the permission of the Bureau of Fisheries, I have worked up 

 this valuable collection and prepared this report upon it. To that 

 bureau I tender my best thanks. I also extend my thanks to the 

 late Professors Ijima and Watase and to Professor Yatsu, who have 

 kindly given me a table in the Zoological Institute ; to Dr. S. Hozawa 

 for his many valuable suggestions; and to two American colleagues, 

 Dr. Waldo L. Schmitt, of the United States National Museum, and 

 Dr. Carl L. Hubbs, of the University of Michigan, for assistance in 

 seeing the manuscript through the press. 



The specimens are referable to 42 species and 7 subspecies be- 

 Jonging to 17 genera and 3 subgenera. Owing to the imperfectness 

 of the specimens the following material, mentioned elsewhere herein, 

 could not be specifically determined : Hyalonematids, Farrca sp., 

 Aphrocallistes sp., Bathydorus species? a and fi. 



Twenty-nine species and subspecies, as follows, are new to science : 



Pheronetna globosum kagoshimensis, Hyalonema (CyUconeina) hosawai, 



page 6. page 22. 



Pheronema ijimai, page 8. Hyalonema (Coscinonema) kirkpat- 



Phcroncma siinigcnsis, page 13. ricki glohosmn, page 2G. 



Hyalonema (Cyliconema) apertum Hyalonema (Cosciimuema) ovatum, 



solidum, page 21. page 2G. 



No. 2935 -Proceedings U. S. National Museum. Vol. 81, Art. 12. 



1 



