ww 
Boas, J. E. V.: Biologisch-anatomische Studien über den Hals der Vogel. Mit 23 Tafeln und 20 
Figuren him Text: 19290 22.22.22 So Meee RS N ee a TER 
Berg, Kaj and Gunnar Nygaard: Studies on the Plankton in the Lake of Frederiksborg Castle. 
With; 62Plates and’ 27*Fisures in thertexle 1929" SE RME RE ER eee CE ae 
II. med 30 Tavler og 8 Shemaer rs ss SAREEN ee RE A SE ROSES 
. Wesenberg-Lund, C.: Contributions to the Biology of the Rotifera. Part II. The Periodicity and 
Sexual ‘Periods: With 15-Plates and!:8Schemata- 41930) 2. -._... 12. 2 er oe ee ee eee 
Bøggild, O. B.: The Shell Structure of the Mollusks. With 15 Plates and 10 Figures in the text. 1930 
III, (under Pressen): 
Ostenfeld, C. H.: The Distribution within Denmark of the higher Plants. Results of the topo- 
graphic-botanical Investigation. I. A brief Historical Survey of the Investigation. With one Plate. 1931 
Jessen, Knud: Samme. II. The Distribution of the Papilionaceæ within Denmark. With nine 
LIES UE ER abe Moree ER En ee en Eee Bama nie US D Go te bes 
iv. (ander Pressen): 
Mortensen, Th.: Contributions to the Study of the Development and Larval Forms of Echino- 
derms: HE With oPlates VIT 9315 ee se tee ees eee eee ee eee ae eee 
Brøndsted, H. V.: Bygningen af Snuden og Ansigtsmuskulaturen hos nogle Pinnipedier med særligt 
Hensyn til Oppusiningssekken hos Klapmydsen. Med 12 Tavler. Mit einem deutschen Resume. 1931 
Wesenberg-Lund, C.: Contributions to the Development of the Trematoda Digenea. Part L The 
Biology of Leucochloridium Paradoxum. With 6 Plates and 7 Textfigures. 1931................. 
Mortensen, Th.: New Contributions to the Knowledge of Cidarids. I—II. With 13 Plates. (Under 
Pressen). 
