144 
CELLtILTPOEl. 
CELLTJLIPORA, d’Orbigny, 1849. 
Stxoxtms. 
CelluUpora, d’Orbigny, 1849.^ 
? Ceriopora, pars, Rbmer, 1840; Michelin, 1845. 
Reptonodicava, pars, d’Orbigny, 1854. 
Monticulipora, pars, d’Orbignv, 1850. 
? Semimiilticava, d’Orbigny, 1854. 
Semimultisparsa, pars, d’Orbigny, 1854. 
Diagnosis. 
^Massive Diastoporidae in which the zoariiini consists of zooecial 
groups, which are angular in form and packed together. The 
groups consist of a large number of small zooecia, with tlu‘ 
apertures ari'anged irregularly or with a tendency towards 
a radial arrangement. The zooecial groups are surrounded 
by a band of rudimentary zooecia, and separated by a zoarial 
lamina. 
Type Species. 
CelluUpora ornata, d’Orbigny, 1850: Prod. Pal. vol. ii. p. 175 ; 
Bry. Cret. p. 874, pi. 606, figs. 5, 6. 
Affinities. 
The systematic position of CelluUpora is a question of some 
interest, as the genus has the most massive and specialized zoariiim 
of the Diastoporidae. The genus was originally included by 
d’Orbigny in his very comprehensive family the Sparsidae, but he 
placed it next to Reptomultisparsa, and among the genera now 
regarded as the Diastoporidae. At first sight the zoarium looks 
very unlike a Diastoporidan ; but that d’Orbigny was right in his 
opinion seems most probable from the microscopic structure of the 
zooecia. They are of the typical Diastoporidan type. The zooecia 
are crowded together, more or less vertical in position, and they 
agree closely in appearance with those of Berenicea spissa. As 
in that species the zooecia have a tendency to occur in radial 
groups, it may be closely allied to the ancestral form of CelluUpora. 
^ D’Orbigny, 1849. Genr. nouv. MoU. bry. : E.ev. Mag. Zool. ser. 2, vol. i. 
p. 500. 
