CONOTUBIGERA, MULTITUBIGEEA . 
23 
4. irregularis, d’Orbigny, 1853. 
Syx. Conotubigera irregularis, d’Orbigny, 1853. Br}\ Cret. p. 770, pi. 752, 
tigs. 11, 12 ; pi. 753, figs. 1, 2. 
Char. — Zoarium simple, clavate, flat-topped. Kidges project but slightly, and 
the apertures are uniserial. 
Distrib. — Senonian — Campanian : IMeudon. 
MULTITUBIGERA, d’Orbigny, 1853. 
[Ery. Cret. p. 767.] 
Synonym. 
^ Radiofascigera, d’Orbigny, 1853. 
Diagnosis. 
Theonoidse in which the zoarium is compound, and composed of 
many confluent Actmopora. 
Type Species. 
MuUituhigera gregaria {(['Ovhigxij), 1850. Senonian: Doyan. 
Affinities. 
The generic separation of these compound Theonoids appears to 
have as much justiflcation as, for example, the separation of 
compound corals from allied simple corals, although the corallites 
of both have the same combination of characters. Occasional 
specimens of Actinopora are composed of two or three colonies that 
happen to have grown together, but they do not resemble the 
massive forms of MuUituhigera, and are not sufficient to connect the 
two genera. 
For possible affinities with Radiofascigera see p. 52. 
Multitubigera sulcata,^ Gregory, 1909. 
Synonymy. 
Multitubigera sulcata, Gregory, 1909. New Cret. Bry. : Geol. Mag. dec. 5, 
vol. vi. p. 61. 
Diagnosis. 
Zoarium massive and thick. Radial ridges of each zooecial sub- 
colony short, thick, and wedge-shaped. Apertures triserial 
to multiserial at the ends of the radii. 
^ So named on account of its furrows between the sub -colonies. 
