ill!Ill

49 3 ANTHODISCUS.
GENUS 160. ANTHODISCUS, Grove and Sturt, 1887.
Fig. 240. A nlhodiscus floreatus.
Valve with numerous marginal compartments, separated by
septiform depressions ; umbilicus rounded, hyaline. Intermediate
portion finely punctate, with puncta radiating, interrupted
distance by blank spaces.
A single species.
at a certain
A.floreatus Gr. and St., fossil in the Oamaru deposit. Figure 240 repro-
duces my photograph of this beautiful form.
GENUS 161. ACTINODICTYON PANT, 1889.
.
Fio
Weissflo^ii
Actinodictyon antiquorum.
photographed from the author's specimens.
Valve with unequal
compartments; the elevated
compartments very narrow,
terminated by a process ;
depressed compartments
broad, reticulate, triangular,
interrupted at the base
by a short elevation elongated
into the hyaline umbi-
lical portion.
Two species both fossil
from Ananino, Russia, A.
Pant., and A.
antiquoriim Pant. (fig. 24 1 )