11 



the summer of 1 ( .>20 Mr. (i. L. (irnelnnd at my request undertook In 

 collect a scries of plankton samples (by means of I he wash-deck pump) 

 on a trip to Buenos Aires. The result was remarkably poor, only l\vn nf 

 the samples containing any Fchinoderm larva- at all: still some informal ion 

 was gained hereby also. Further. Mr. II. Faye, SLC.ru/. West Indies. 

 undertook to collect some plankton samples for me in the harbour of 

 Christianssled, which contained several interesting Fchinoderm larva, 1 . 

 To all these gentlemen I beg to lender my best thanks for this assistance. 

 Plankton samples were generally taken at the diiTerent places in the Pacific 

 where longer stay was made; not few important and interest ing forms of 

 larva 1 have been secured in that way, especially of the Ophiuroid-larvae 

 which are generally found quite well preserved in such plankton samples: 

 descriptions of such forms are included in the following report. On the 

 author's expedition to Siam in l.SWI 1'HH) there were also collected several 

 Kchinoderm larva', which are likewise included in the present report. 

 It may, however, be emphasi/.ed that by no means all the larva 1 thus 

 collected have been described here. Only such as were found to present 

 special and noteworthy features or that could he identified with forms 

 hitherto described and thus allordiug /oogeographical information have 

 been included. 



It is a very agreable duly to me lo express my indebtedness and sincere 

 thanks to all those authorities and colleagues who have rendered me 

 assistance on my voyage or otherwise in connection with I his work. First 

 of all my thanks are due lo the Carlsberg Fund which by its liberal 

 grant made it possible for me to reali/.e my plan of the Fxpedition lo the 

 Pacific, and from which grants were also received for publishing this 

 report, A special granl was also given me from Ihe Danish (iovern- 

 menl for enabling me lo complete the reports on Ihe material from my 

 voyage. Adopting a chronological arrangement 1 then beg to address 

 my sincere thanks lo the director of Ihe Biological Station at Misaki. 

 Japan, Professor I. Ijima, Tokio, and Dr. Fuji la. then Assistant at Un- 

 said Biological Station; lo Professor \V. A. Ilaswell and Dr. S. .lohnslon. 

 at the University of Sydney: Professor II. B. Kirk. Wellington: Professor 

 \V. A. Bryan, Honolulu, ami Mr. D. Thaanum. Ililo. Hawaii: Dr. 

 Ch. MacLean Fraser, Director of the Biological Station. Nanaimo. 

 Vancouver B. C.: Professor Wm. Riller. Directo'r of Ihe Biological Sta- 

 tion of the Scripps Inslilulion. La .lolla. California: Professor .lames 

 Zetek. Panama, and Professor A. (i. Mayor, Director of the Depart- 

 ment of Marine Biology of Ihe Carnegie Inslilulion, Washington 1). C. 

 A special thank I owe to the New Zealand (iovernmen I for inviting 



