474 



K. KIDSTON AND D. T. GWYNNE-VAUGHAN ON 



admitted, however, that so far as our present knowledge extends it differs in no 

 essential particular from the modern genus Osmunda. We reproduce here a figure 

 of the sterile foliage kindly supplied to us by Dr Nathorst (text-fig. 2). 



Localities. — Nordenskioldsberg and Van-Mijensberg, Spitzbergen. 



Horizon. — Tertiary. 







^ 



f/ 



s 



Text-fig. 2. -Osmunditcs spetsbcrgensis, Nathorst. From MS. plate of forthcoming work by Dr Nathorst, Zur Terticiren 

 Flora Spitzbergcns. Portion of a frond showing character of growth. Natural size. 



Note. 

 Nathorst gives the following as the chief divisions of the Tertiary in Spitzbergen : — 

 " G. Oberste Sandsteinreihe (mit Kohlen und Pfianzen). 

 5. Plattschiefrige Sandsteinreihe (mit marinen Muscheln). 

 4. Obere schwartzc Schieferreihe (mit Feuersteingerollen des Permokarbon). 

 3. Griinc Sandsteinreihe (mit Wurmfarhten). 

 2. Untere dunkle Schieferreihe. 



1. Untcrstc lielle Sandsteinreihe (Zuunterst Kohlenfioze und Pfianzen, dariiber 

 marinen Muscheln)." * 

 Osmunditcs spetsbergensis comes from the highest of these divisions; his 

 number <>. 



* Natitorht, I.e., p. 382. 





