CERIOPORA. 
165 
nodular rather than tuberous. C. irregulars (Mich.) is another 
allied species, but the tendency of its zoarium is to become lobed 
or branched. 
D. 3020. A massive, broad-based zoarium, the typical form. Lower Greensand. 
Shanklin. Caleb Evans Coll. Purchased from E. Westlake. 
Figd. PI. Y. Fig. 9, and Text-fig. 43. 
6. Ceriopora tuberosa (Rdmer), 1839. 
Synonymy. 
Alveolites tuberosa, Eomer, 1839. Yerst. nordd. Ool., Nachtrag, p. 14,pl.xvii. 
fig. 9. 
Ceriopora {Alveolites) tuberosa, Romer, 1840. Yerst. nordd. Kr. p. 23. 
non ,, tuberosa, Micbelin, 1846. Icon. Zoopb. p. 208, pl. liii. fig. 1. 
non „ ,, Kade, 1852. Los. Yerst. Schanzenb. p. 32. 
Polytrema ,, pars, d’Orbigny, 1850. Prod. Pal. vol. ii. p. 94. 
Reptomulticava ,, pars, d’Orbigny, 1854. Bry. Cret. p. 1036, pl. 791, 
figs. 13, 14. 
Fig. 43 . — Ceriopora confusa ; x 12. D. 3020. 
Diagnosis. 
Zoarium small ; of short, thick, lobe-like branches from a flat 
base. 
Zooecia with small, crowded, circular apertures. Diaphragms 
numerous. 
Dimensions. Romer’s type. B.M. D. 3670. 
mm. mm. 
Height of zoarium ... ... ... 16 ... 15 
Width of zoarium 16 ... 15 
Diameter of apertures ... ... — ‘1 
