52 Art. 8. — A. Kryshtofo\-ich : 



outline and nervation with our species, is at once distinguished, 

 however, by the Tertiary veins making network with rectangular 

 meshes, instead of the only tender polygonal ones in ours. 



25. Credneria aff. integerrima Zenker. 



1833. Zenker, Beiträge zur Naturgeschichte der Urwelt, p. 17, pi. Il, fig. 1. 

 1858. Stiehlee, Beiträge zur Keuntniss der vorweltlicbeu Flora, p. 64, t. 



IX, f. 2, 3. 

 1874. Heer, Kreideflora der aretiseben Zone, p. 711, t. XXXII, f. 20, 21. 

 1882. Heer, Die fossile Flora Grönlands, p. 78, pl. XXXVI, f. 4. 



Locality : Sea-shore at Mgaeh. 



Of this species there is a single leaf, only 



2.5 cm. in length and 20 cm. in width, and with 



the midrib stout enough below the point of origin 



of the basal secondary nerves. These nerves are 



found two on each side of the midrib. The mar- 

 Fig. 9. 



Credneria aff. &^^^ ^^ ^^^® ^^^^ ^^ quito entire and the outline 

 integerrima Zbnk. broadly ovatc. Tho lamina is a little decurrent. 

 The original European species shows very large leaves, but smaller 

 specimens were figured by Heee, especially in his fig. 21 (1. c), 

 though our leaf is still smaller. Tho species was recorded ù'om 

 the Atane in Greenland and the Senonian of Europe. 



26. Credneria sp. 



Locality : Near Petrovsky's coal mine. 



Some perfectly preserved impressions of exceedingly large 

 leaves, found here in abundance, may be referred either to the 

 species above described or one closely allied to it. 



