126 
DIASTOPORA. 
6. tuberosa, d’Orbigny, 1851. 
Syn. Biastnpora tuherosa, d’Orbigny, 1851. Bry. Cret. pi. 639, figs. 1-3. 
Semimultisparsa ,, d’Orbigny, 1854. Ibid. p. 871. 
Biastopora grandis, pars, Pergens, 1890. Revision, p. 335. 
Char. — Zoarium very massive. Zooecial groups discoid or lobed, in regular 
layers. Peristomes low, distant, and fairly uniformly distributed. 
Distrib. — Senonian — Maastrichtian : Meudon. 
Coniacian : Villedieu, Loir-et-Cher. 
Turonian : Lavardin, Loir-et-Cher ; La Rousseliere, Charente. 
6. tuberosa (von Reuss), 1874 (wow d’Orb.). 
Syn. Biastopora tuberosa, von Reuss, 1874. Bry. ob. Plan. : Pala?ontogr. 
vol. XX. pt. 2, p. 132, pi. XXV. figs. 2, 3. 
Char. — Zoarium of irregular, nodular masses. Zocecia short, stout, and 
apparently sub -piriform. 
Distrib. — Turonian— Upper Planer : Saxony. 
DIASTOPORA, Lamouroiix, 1821. 
Synonyms. 
Ceriopora, pars, Goldfuss, 1827. 
Biastopora, pars, Pergens, 1890; Canu, 1898. 
Mesenteripora, de Blainville, 1834. 
Bolytrema, pars, d’Orbigny, 1850. 
Bidiastopora, pars, d’Orbigny, 1851. 
Cisternifei'a, pars, Walford, 1894. 
Bitaxia, pars, von Hagenow, 1851, 
Diagnosis. 
Diastoporidae in yvhich the zoarium is erect and foliaceous, and 
consists of fi’onds, Tvhicli may he simple and lohed, or divided 
into multifid segments, or crumpled into suh-hemispherical 
masses, or coiled into cylindrical, infundihulifonn tubes. 
The zoarium is hilaminar or unilaminar. The zocecia are 
cylindrical. 
Peristomes flush vrith the suriace of the zoarium, or hut slightly 
raised. 
Goncecia are often present. 
Type Species. 
Diastopora foUacea^ Lamx., 1821. Rathonian : Prance. 
