224 
ZONATULTD^. 
of the apertures, and leads me to include the species doubtfully in 
MuUhonopora. 
Romer’s Ceriopora suhnodosa appears also to he a form of this 
species; he figured part of a worn stem which contained only 
the apertures belonging to one zone of the stem. 
Keeping’s H. arhuseula is probably the same species; he remarks 
the zonary arrangement of its apertures, and he includes in his 
species a specimen previously catalogued as Ceriopora pohjmorpha 
of Goldfuss. 
LIST OF SPECIMENS. 
D. 3644. Two branches of var. subnodosa. One is 27 mm. long, 7 mm. in 
diameter near the base, and 5 mm. in diameter near the top. The 
branches are slightly compressed in section. The surface is nodose, 
which gives it somewhat the aspect of a Xodicrescis. The hands of 
mesopores are narrower than in D. 3652. Xeocomian — Hils- 
conglomerat. Berklingen, Brunswick. Saemann Coll. 
D. 3650. A branch of the var. biformis, 18 mm. long, 4 mm. in diameter at 
the base, and 3 mm. above. The linear arrangement of the apertures 
is distinct. Xeocomian — Hilsconglomerat. Berklingen. Saemann 
CoU. 
D. 3652. A zoarium of the var. snbnodosa (Rom.) and a section from the 
same. The branches are all in one plane, and are laterally 
compressed; the larger branches are 6 x 4*5 mm. in diameter, 
the smaller 4x3 mm. in diameter. The areas of mesopores are 
wider than in D. 3654, or in that shown in Bonier ’s figure ; it thus 
presents an intermediate stage to C. subnodosa. Xeocomian — 
Hilsconglomerat. Berklingen, Brunswick. Saemann Coll. Figs. 
60, 61, p. 223. 
D. 3654. Three irregular zoaria; one of which is growing attached to a sponge. 
The largest is 35 mm. high, 13 mm. in diameter at the base, and 
has stems 9 mm. in diameter, ivhich taper to 8 x 7 mm. near the 
top. The growth of the branches is very irregular. The sti'uctm-e 
is like Heteropora, with single circles of large mesopores around the 
apertures. In the upper part of the stems there are narrow zonal 
hands of mesopores. Also a section of the same. Xeocomian — 
Hilsconglomerat. Berklingen, Brunswick. Saemann Coll. Fig. 59, 
p. 222. 
? D. 3655. Two dichotomous stems, one 38 mm. long and the other 28 mm. long. 
The shorter branch is the better preserved ; it is 8 mm. in diameter 
at the base ; is 4 mm. in diameter above the fork ; and shows the 
occurrence of both mesopores and normal zooecia, while in the upper 
part of the stem there are areas occupied by mesopores only. The 
longer branch is less well preserved ; the stem is 4-6 mm. in 
diameter, and is laterally compressed ; its branches are not quite 
in the same plane. Xeocomian. Censeau, near Safins, Jura. 
Saemann Coll. Labelled by Saemann Ceriopora tuberosa. 
