14 ART. S. H. YABE. 



froncis mentioned by Nathoest as N. cfr. orlentalls from Spitz- 

 bergen is also striking. N. tenuinervis Nath. from Yorkshire 

 and Bornholm is no doubt an ally of this oriental species, as 

 already pointed out by Nathoest, Heee and Sewaed. Very 

 recently, Nathoest reported the occurrence of a Nihsonia very 

 much like the European species in a Jurassic deposit at Espérance 

 Bay, Louis-Philipp land. 



NILSSONIA SP. 

 PI. ILL, fig. 6. 



The fragment here figured belongs to a species decidedly 

 different from the preceding. It shows a lower portion of a leaf, 

 which is cut into two alternate segments. The segments are 

 continuous at the base ; the upper margin is nearly straight, the 

 lower strongly convex, and both make an acute angle between 

 them. In this respect it closely resembles N. nipponensk Yok.^^ 

 from the Japanese Jurassic, but is distinguished from it by having 

 very densely crowded veins (about 6 in a milimeter). 



DIOONITES, BoENEM. 

 DIOONITES (?) SP. 



PI. III., fig. 7. 



There is another fnigment of a pinnate frond, 2.7 cm. in 

 length, which appears to have been thin in texture. About 



1) Yokoyama: 1. c. p. 42, pi. VI., üg. Sd ; pi. VIL, figs. 2-7, 8a; pi. XLI., fig. 6. 



