284 
KADIOPOUID^. 
Michelin’s figure, and with the exception of the Maiden Bradley 
specimens, the species is known only by that figure. 
D. 11,829-30. Two specimens from the tipper Greensand of Maiden Bradley. 
2. Radiopora neocomiensis (d’Orbigny), 1850. 
SrNONTMY. 
non Seteropora tuherosa, Romer, 1840. Verst, nordd. Kr. p. 23 {fide 
d’Orbigny). 
,, Ceriopora ,, Michelin, 1846, Icon. Zooph. p. 208, pi. liii. tig. 1. 
,, ,, ,, von Hagenow, 1846. In Geinitz, Grundr. Verst, 
vol. ii. p. 507. 
,, Radiopora ,, d’Orbigny, 1852. Prod. Pal. vol. iii. p. 138. 
,, Polytrema subtuherosa, d’Orbigny, 1850. Ibid. vol. ii. p. 94, 
Monticulipora neocomiensis^ d’Orbigny, 1850. Ibid. p. 95. 
Radiopwa heteropora (excl. three synn.), d’Orbigny, 1854. Bry. Cret. p. 993, 
pi. 781, tigs. 13-16. ’ 
,, ,, de Loriol, 1863. Invert. Mt. Saleve, pt. ii. p. 143i 
pi. xviii. fig, 3. 
,, ,, pars, Etheridge & Newton, 1878. Cat. Cret. Foss. Mus. 
Pract. Geol. p. 7. 
,, ,, Canu, 1902. Bry. loss, i.. Coll. Camp, : Bull. Soc. geol. 
France, ser. 4, vol. ii. p. 12. 
Lichenopora [Radiopora) heteropora (excl. three synn.), Pergens, 1890. Rev. 
p. 383. 
Ceriopora cavernosa [non Hag.), Etheridge & Newton, 1878. Cat. Cret. Foss. 
Mus. Pract. Geol. p. 6. 
Cff)'iopora [Multicrescis) mammillosa, pars, Etheridge & Newton, 1878. Ibid. 
p. 6. 
Diagnosis. 
Zoarium irregularly hemispherical, or with the hemispherical 
upper part of the zoarium raised on a cylindrical base, the 
sides of which are banded by the outcrop of the successive 
layers. The upper surface is covered with regular mamelons. 
Each mamelon has a porous centre, from which radiates a 
regularly radial series of apertures. 
Dimensions. 
D’Orbigny’s type, 
mm. 
Height of zoarium ... ... ... ... ... 13 
Diameter of zoarium ... ... 15 x 17 
Diameter of radial groups ... ... ... ... 3 
Distribution. 
British : 
Lower Greensand : Farringdon, Berkshire. 
