DISCOCATEA. 
239 
Distrib. — Senonian — Maastrichtian : Meudon, near Paris; ? Maastricht 
Hamm) . 
Coniacian: Les Roches, Loir-et-Cher. 
Ai'f. — T his is the Senonian representative of L. pocillwn, from Avhich it differs 
by its shorter and straighter lines of apertures and its compressed zoarium. 
Vine’s Z. compressa is redescribed on p. 32 as a Biscofascxgera vinei. 
3. discus (Poka), 1892. 
Syn. Lichenopora dncus, Pocta, 1892. Mech. Koryc. Hory : Ceska Ak. Fr. 
Jos. Praze, sect. ii. pp. 27-8, 33, 41, pi. iv. fig. 12. 
Char. — Zoarium irregularly elliptical, tumid, with about six of the central 
zooecia raised highly above the general surface. Apertures large ; in irregular. 
uniserial rows, with only occasional mesopores. 
Dimensions. mm. 
Diameter of zoarium ... ... ... ... 4-7 
Length of zooecia -5 
Diameter of apertures ... ... ... ... -19 
Distrib. — Cenomanian — Korycaner Schichten: Kank, Bohemia. 
4. elegans (Simonowitsch), 1871. 
Syn. Radiopora elegnns, Simonowitsch, 1871. Bry. Essen. : Verb. nat. Ver. 
preuss. Rheinl. vol. xxviii. p. 38, pi. ii. figs. la-e. 
non Actmopora [Radiopora) elegans, Etheridge & Newton, 1878. Cat. 
Cret. Foss. Mus. Pract. Geol. p. 6. 
Char. — Zoarium fungiform, with a flat base, expanding stem, and convex upper 
surface. About 4 mm. in diameter and 3 mm. high. Apertures in about sixteen 
uniserial rows, confined to the upper surface. The radial series are alternately 
long and short ; the long rows reach to the edge of the central porous depression, 
and have eight to nine apertures in each ; the shorter rays each contain four to 
five apertures. The radial series are well separated, with from two to three 
lines of mesopores between them. Side of the zoarium marked by crowded 
mesopores. 
Distrib. — Cenomanian ; Essen. 
Aff. — The specimens from the Lower Greensand of Famngdon, identified as 
Radiopora elegans by Etheridge & Newton, are Idmonea hagenowi (Sharpe). 
5. multiradiata (von Keuss), 1872-3. 
Byn. Refrancia multiradiata, pars, von Reuss, 1872-3. Bry. unt. Quad. : 
Palseontogr. vol. xx. pt. i. p. Ill, pi. xxvii. 
fig. 5 [non 6). 
€har. — Zoarium fungiform ; broad peripheral zone traversed by very numerous 
radial rows, with from ten to twelve apertures in each row. The rows are 
uniserial for most of the length, but appear to be biserial at the outer end. 
Well-marked central depressions. The innermost aperture of the principal 
radial rows is very large. 
Distrib. — Cenomanian — Lower Quader : Saxony. 
