PLATE X111.
1 & 2. Front and side view of a globose, slightly conical body, pretty regularly areolated, and surrounded by a rounded honeycombed riflg. I am indebted to Dr. Greville for pointing out the front view, as belonging to the same object, which he decided to be
"not a Diatom." Can it belong to Stephanopyxis or Xanthopyxis or some of that obscure group which even Ehrenberg regards as " very doubtful Diatoms ? " See Pritchard, page 827. It is a very beautiful object, but difficult to get a good view of, as the ring and the globe require different foci. In slide, Vaughan's' Barbados, No. 1; magnified about 400 diameters.
3.Probably a variety of the Dictyospiris on Plate II, fig. 2, and Plate XI, fig. 4, but with a greater number of spines, and differently arranged.
4. Possibly a Lychnocanium, with the apex dilated into a broad flat spatula instead of the usual spine.
5. A Rhabdolithes (?)
6. A partially developed form spinning its outer web round the nucleus, as in Müller's description of Haliomma.
7. Chinese lantern shape in slide. Vaughan's resembles Dictyolithes Pyamidalis of Mik., PI. XX. fig. 30; but this is a much more developed specimen.
