16. Acanthodesmia arcuata, fig. 25 = Zygostephanus.

17. Acanthodesmia inermis, fig. 26 = Dictyospyris?

18. Cladospyris moluccana, fig. 48 = Cyphonium?

19. Podocyrtis brevipes, fig. 24 = Podocyrtis.

20. Podocyrtis micracantha, fig. 49 = Podocampe?

21. Lithocampe corbula, fig. 21 = Lithomitra.

22. Lithocampe sinuosa, fig. 22 = Lithocampe?

II. List of Fossil Radiolaria (probably Jurassic) found in the "Diaspri della Toscana," and described in 1880 by Dante Pantanelli (L. N. [36]). (Compare § 243, Note B, p. [clxviii]).

The figures are too small and too incomplete for certain determination.

I. Spumellaria.