The Crinoids 



from 

 Di\ S. Bock's Expedition to Japan 1914. 



This systeniaiie work is an investigation of the fine and vei-y 

 interesting Crinoid material that was brought home by Dr. Sixten 

 Bock's Japanese expedition of 1914 and which has kindly been deli- 

 vered to me by Dr. Bock for determination. On many occasions the 

 determination has been facilitated by comparison with the crinoids 

 that Dr. Moetensen of Copenhagen has collected in the same regions 

 and also kindly delivered to me for determination. 



I am much indebted to Mr A. H. Clark of Washington for the 

 very valuable information he has always readily rendered me. To 

 Professor A. Wirén of Uppsala I also wish to express my thanks for 

 the kind interest with which he has followed my investigations. 



The translation has been made by myself with the assistance 

 of my sister Miss Martha Gislén. The work was afterwards revised 

 by Mr Henry Alexander M. A. and to both these helpers I herewith 

 offer my heartiest thanks. 



Finally I beg to express my gratitude to Miss Sigrid Ohlsson 

 and Miss A. Starup, who have kindly drawn in Indian ink the text- 

 figures made by myself in pencil. 



The points of view that I have followed in my investigation 

 have chiefly been the same as I applied when revising the crinoid 

 material brought home from Australia by Dr. Mjöbeeg, though I have 

 been able to begin and complete the determination of the Japanese 

 Crinoids with a deepened knowledge and also to apply a more tho- 



Nova Acta Reg. Soc. So. Ups., Ser. 1, Vol. ô. X:o 6. Impr. '" i 1922. 1 



