Todites undans (L. & H.) Harris, p. 14. (Name.) 3. The following fertile specimen from Bornholm is stated by Halle (1921 : 14) to be similar to Cladotheca undans : Asplenites cladophleboides Muller, p. 27, pi. 2, fig. 20. 4. Sterile specimens from other regions which have been identified as Cladophlebis denticulata or with its synonyms and need further study for reliable determination or else, as noted below, are distinct. Alethopteris insignis Eichwald, p. 15, pi. 11, fig. 6. (Russia.) Cladophlebis denticidata (Brongn.): Fontaine, p. 71, pi. 7, fig. 7, pi. 4, fig. 2. (Small fragments with rather different veins. American Cretaceous.) Cladophlebis denticulata (Brongn.): Raciborski, p. 224, pi. 22, figs. 3, 4. (More coarsely dentate than in Yorkshire. Poland.) Cladophlebis insignis (Eichwald): Raciborski, p. 81, pi. 22, figs. 9, 10. (Pinnules entire. Poland.) Cladophlebis denticulata (Brongn.): Fontaine in Ward, p. 68, pi. 11, figs. 1-7. (Small fragments. American Cretaceous.) Cladophlebis denticulata (Brongn.): Seward, pp. 5, 21, pi. 1, figs. 8, 9 (pinnules with entire margin), pi. 2, fig. 33 (pinnules with different venation), pi. 3, fig. B (margin entire ?), pi. 4, figs, k-n (margin entire).(Caucasia and Turkestan.)Cladophlebis denticulata (Brongn.): Kryshtofovich, p. 5, pi. 1, fig. 1, 1 a (veins different). (Ussuriland.) 1911 Cladophlebis denticulata (Brongn.): Thomas, pp. 14, 63, pi. 2, figs. 10-12. (Venation different ?. Kamenka, Russia.) 1911 Cladophlebis denticulata punctata Thomas, pp. 15, 65, pi. 2, fig. 13, 13a. (Distinguished by punctate rachis. Kamenka, Russia.) 1911a Cladophlebis denticulata (Brongn.