286 
EADIOPORID^. 
'Uhe species is common at Fariingdon. Some of the specimens 
(viz. D. ^9-) from that locality at the Museum of Practical 
Geology, recorded by Etheridge & Newton as Ceriopora 
crescis) mammillosa (Rom.), are young incrusting specimens of 
R. neocomiensis. Another specimen in the same Museum (D. 
also from the Cunnington Coll.), recorded as C. {M.) mammillosa, 
is a Seteropora with a clavate zoarium 21 mm. high and 
16mm. in its greatest diameter; the apertures are non-radial in 
arrangement, and there is a single series of mesopores between 
the apertures. There is no evidence to show that the structure 
is multilamellar, so the specimen is a true Heteropora. 
One of the specimens in the Museum of Practical Geology (viz. 
D. tI), recorded as Radiopora heteropora, belongs to R. neocomiensis. 
The Radiopora tuherosa of d’Orbigny (Prod. Pal. vol. iii. p. 138) 
is a compound, turbinate Lichenopora from the Miocene beds 
of Turin. 
LIST OF SPECIMENS. 
D. 3143. A medium-sized zoarium, with five thin sections, three horizontal 
and two vertical. Lower Greensand. Farringdon. Old Coll. 
Figs. 74 , 75, p. 285. 
D, 11,831. A second zoarium, which has the intermediate spaces between the 
zooecial pillars of a darker colour than the rest of the zoarium. 
Lower Greensand. Farringdon. Old Coll. 
A zoarium with polished vertical section. Lower Greensand. 
Farringdon. R. Etheridge Coll. 
A small irregularly ovoid zoarium. Lower Greensand. Farringdon. 
Old Coll. 
Three zoaria. Lower Greensand. Farringdon. J. Brown Coll. 
A very worn specimen. Lower Greensand. Farringdon. J. Brown Coll. 
A zoarium with strongly mammiilated surface. Lower Greensand. 
Farringdon. Cunnington Coll. 
Longitudinal ovoid specimen. Lower Greensand. Farringdon. 
F. Ellis Coll. 1901. 
Zoarium. Lower Greensand. Farringdon. F. Ellis Coll. 1901. 
A very worn zoarium. Lower Greensand. Farringdon. Mantell Coll. 
A large irregular zoarium. Lower Greensand. Farringdon. Mantell 
Coll. 
10,189. A small zoarium. Lower Greensand. Farringdon. Mantell Coll. 
10,300. A small worn zoarium. Lower Greensand. Farringdon. Mantell Coll. 
D. 11,572. A large sub-spherical zoarium. Lower Greensand. Farringdon. 
Mantell Coll. 
10,304. A very worn broken specimen. Lower Greensand. Farringdon. 
Mantell Coll. 
51,158. A zoarium that had been labelled Fascicularia aurantium. Cor. 
Crag. Ramsholt.” Lower Greensand. Farringdon. Old Coll. 
D. 3142. 
D. 4984. 
D. 4985. 
D. 4986. 
D. 5040. 
D. 7170. 
D. 7171. 
10,178. 
10,188. 
