3IULI1TUBIGEKA, PATENARIJL. 
25 
rXEEPRESENTED SPECIES. 
1. campicheana, d’Orbignv, 1853. 
Syn. MiiUitubigera campicheana, d’Orbigny, 1853. Biy. Cret. p. 768, pi. 763, 
figs. 10-13. 
,, ,, Canu, 1902. Bry. foss. i.. Coll. Camp. : Bull. 
Soc. geol. France, ser. 4, vol. ii. p. 12. 
Char. — The zoarium is irregular, being composed of unequal colonies. Each 
colony has a broad selvage ; the radii are straight, narrow, and biserial. 
Distrib. — Xeocomian: Sainte-Croix, Yaud. 
2. gregaria (cl’Orbigny), 1850. 
Syn. Radiopora gregaria, d’Orbigny, 1850. Prod. Pal. vol. ii. p. 267. 
MuUitubigera gregaria, d’Orbigny, 1853. Bry. Cret. p. 769, pi. 752, 
figs. 9, 10. 
Char. — Zoarium massive, irregular ; radii well defined, narrow, straight, and 
biserial. 
Distrib. — Senonian — Maastrichtian : Boyan, Charente-Inferieure. 
PATENARIA, Hamm, 1881. 
[Bry. mastr. Ob. -Sen. i., Cycl. p. 33.] 
Diagnosis. 
Theonoidoe with a simple discoid zoarium, adnate by its whole 
lower surface ; the zooecia are collected into radial bundles, 
which form low radial ridges ; the apertures are all on the 
outer edge of the zoarium. The upper surface of the zoarium 
is covered by a smooth epizoarium. 
Type Species. 
Patenaria depressa,^ 2 Lmm. Senonian — Maastrichtian: Maastricht. 
Affinities. 
This bryozoau, from its description, appears to resemble those 
species of Actinopora diadema (Goldf.) in which the ridges extend 
almost to the margin of the zoarium and there end in a steep face, 
and the middle of the zoarium has no apertures. Hamm, however, 
places the genus in the Osculiporidse, so that this resemblance may 
be misleading. 
