EADIOPORID^. 
A zoarium which begins ^nth a flat base, 8 mm. long and 3 mm. wide, 
giving off two primary branches, both of which fork. The 
zoarium appears to have been attached to the stem of some 
organism. Two slides with vertical and transverse sectioas, cut 
from the same. Essener Griinsand. Essen. Old Coll. 
One zoarium with base 8 mm. in diameter giving off six primary 
branches. The whole tuft is 22 x 23 mm. in diameter and 17 mm. 
high. Essener Griinsand. Essen. Bruckmann CoU. 
A zoarium with branches so crowded that they give the fossil 
a nodular aspect ; the branches are in very regular series. There 
are six apertures in each radial series. Essener Griinsand. 
Essen. Bruckmann CoU. 
6. Tholopora novaki (Gregory), 1909. 
Synonymy. 
Ketei'opora variabiiis [non d’Orb.), Novak, 1877. Bry. bohm. Kr. : Denk. 
Akad. Wiss. Wien, vol. xxxvii. pt. ii. p. 116, pi. ix. 
figs. 10-20. 
,, ,, Pocta, 1892. Mech. Koryc. Hory : Ces. Akad. Fr. Jos. 
Praze, sect. ii. pp. 25, 33. 
Domopora novaki, Gregory, 1909. New Cret. Bry. : Geol. Mag. dec. v. vol. vi. 
p. 66. 
Diagnosis. 
Zoarium usually clavate, with a large lobed head and annular 
peduncle, tapering towards the base ; but also found massive, 
with numerous stems rising from a broad incrusting base. 
Zoarium of many layers, up to about ten in number. 
Mesopores scarce ; about as many as the zooecia, or slightly more 
numerous. 
Apertures, about six in each vertical series. 
Dimensions. 
mm. 
Height of zoarium ... 1-12 
Diameter of zoarium 3-5 
Distribution. 
? Cenomanian — Korycaner Schichten : Kamajk, Zbislav, Kolin, Kank, and 
Jine, Bohemia. 
Affinities. 
This species was identified by N^ovak with the Multicrescis 
variahhs, d’Orb., ^ and the two species are essentially the same 
in the form of the zoarium ; but the series of specimens in the 
Museum shows that the Bohemian species has the vertical and 
280 
D. 3633. 
D. 3623. 
D. 3630. 
^ Bry. Cret. p. 1077, pi. 800, figs. 3-7. 
