144 
CERIOPOKID^. 
Distribution. 
Danian : Faxoe, Ciply (Tuffeau de Ciply ; fide Pergens). 
Senonian — Maastrichtian : Maastricht. 
PConiacian: Tours [fide Canu). 
Affinities. 
The occurrence of young zooecia between those fully developed 
gives some specimens of this species the appearance of having 
occasional mesopores ; but the series of specimens in the Museum 
Collection shows that the zooecia are monomorphic. 
The typical form consists of short, slightly bilobed stems, such as 
D. 3604 ; but these are connected by intermediate forms such as 
D. 3760, with erect stems such as D. 3361. 
LIST OF SPECIMENS. 
A slide with a thick massive zoarium, 10 mm. high and 10 mm. in 
diameter. It is labelled Ceriopora pohjtaxu\i^'S\Vi.%. Maastrichter 
Kalk. Maastricht. Vine Coll. 
Two zoaria (in tube), 5x6mm. in diameter and 5mm. high. The 
zoaria are large. The lamellar structure is distinct and so also is 
the absence of mesopores, though there are many young zooecia. 
Maastrichter Kalk. Maastricht. Van Breda Coll. 
A zoarium with a hollow base, 11x6mm. in diameter; an upper 
branch growing horizontally is 3 mm. in diameter. Maastrichter 
Kalk. Maastricht. Van Breda CoU. 
A long branch somewhat laterally compressed ; it is 30 mm. long, is 
8 mm. in diameter at the slight constriction above the base, and 
the upper part is 10 mm. wide and 7-8 mm. thick. Maastrichter 
Kalk. Maastricht. Van Breda CoD. 
Three young zoaria of uodular form and irregular upper surface (in 
tube). Maastrichter Kalk. Maastricht. Van Breda Coll. 
A young zoarium of the typical form slightly bilobed above ; it is 
6 mm. high and 5x3 mm. in diameter. Maastrichter Kalk. 
Maastricht. Van Breda Coll. 
A zoarium which divides above into two well-marked branches. It 
has a growth like a Bomopora, hut has no vertical rows of apertures. 
It is labelled “ Ceriopora cavernosa ” by M. Pergens. Maastrichter 
Kalk. Maastricht. Gamble CoU. 
Two young zoaria (in tube) labelled '•'•Ceriopora polytaxis^' by 
M. Pergens. Maastrichter Kalk. Maastricht. Gamble CoU. 
10. Reptomulticava schweiggeri (von Hagenow), 1851. 
Synonymy. 
Ceriopora schweiggeri, von Hagenow, 1851. Bry. maastr. Kr. p. 51, pi. v. fig. 1. 
,, ,, Hamm, 1881. Bry. mastr. Oh. -Sen. i., Cycl. p. 36. 
Reptomulticava ,, d’Orhigny, 1854. Bry. Cret. p. 1034. 
»> ,, IJbaghs, 1879. Descr. Geol. Pal. Limb. p. 225. 
D. 1399. 
D. 3288. 
D. 3360. 
D. 3361. 
D. 3403. 
D. 3604. 
D. 3760. 
D. 3717. 
