50%. S 



CONTENTS. 



Page. 



TH. MORTENSEN: Ctenophora (With 1 Plate and 4 Figures in 



the Text) 1—9 



Published 1913. 



AUGUST BRINKMANN: Pelagic Nemerteans (With 2 Plates) ... 1-18 



Published 1st November 1917. 



EMILY ARNESEN: Spongia (With 5 Plates) 1-28 



Published 10th January 1920. 



JAMES A. GRIEG: Brachiopoda, Scaphopoda, Gastropoda and 



Lamellibranchiata (With 1 Plate) 1—16 



Published 28th February 1920. 



P. L. KRAMP: Anthomedusae and Leptomedusae (With 1 Plate and 



6 Figures in the Text) 1 —13 



Published 28th February 1920. 



KR. BONNEVIE: Heteropoda (With 5 Plates) 1—15 



Published 28th February 1920. 



OSCAR SUND: Peneides and Stenopides (With 2 Plates, 49 Figures 



in the Text and Charts) 1—32 



Published 30th March 1920. 



JAMES A. GRIEG: Echinodermata (With 5 Plates, 10 Figures in 



the Text and Charts) 1—44 



Published 20th January 1921. 



