LICHENOPORl. 
249 
Lefrancia diadema, pars, von Hagenow, 1851. Bry. maastr. Kr. p. 43, pi. iv. 
fig. 4 {non fig. 3 as stated by error in text and 
description of plate) . 
Eadiocavea defrancia, Winkler, 1864. Musee Teyl., Cat. Pal. livr. ii. p. 211. 
,, diadema, Ubaghs, 1879. Descr. Geol. Pal. Limb. p. 224. 
,, ,, pars, Hamm, 1881. Bry. mastr. Ob. -Sen. i., Cycl. p. 43. 
Lichenopcra ,, Hennig, 1894. Bry. Sver. Krit. ii., Cycl.: Lunds Uni v. 
Arsskrift, vol. xxx., Acta Pbysiogr. No. viii. p. 33. 
€triopora costata, von Hagenow, 1846. In Oeinitz, Grundr. Verst, vol. ii. p. 594, 
pi. xxiiiB, fig. 8. 
Defrancia cariosa, von Hagenow, 1851. Bry. maastr. Kr. p. 44, pi. iv. fig. 6. 
Domopora {Defrancia) cariosa. Vine, 1885. Fifth Report : Rep. Brit. Assoc. 
1884, p. 151. 
Lichenopora cariosa, d’Orbigny, 1853. Bry. Cret. p. 963. 
,, ,, Ubaghs, 1879. Descr. Geol. Pal. Limb. p. 225. 
,, ,, Pergens, 1888. Tuf. Ciply : Bull. Soc. beige Geol. vol. i. 
p. 205. 
,, ,, Hennig, 1894. Bry. Sver. Krit. ii., Cycl.: Lunds Unix. 
Arsskrift, vol. xxx., Acta Physiogr. No. viii. p. 34. 
Radiocavea ,, Hamm, 1881. Bry. mastr. Ob. -Sen. i., Cycl. p. 43. 
Defrancia sellula, von Hagenow, 1851. Bry. maastr. Kr. p. 44, pi. iv. fig. 7. 
Domopora {Defrancia) sellula. Vine, 1885. Fifth Report: Rep. Brit. Assoc. 
1884, p. 151. 
Radiocavea sellula, d’Orbigny, 1853. Bry. Cret. p. 965. 
,, Winkler, 1864. Musee Teyl., Cat. Pal. livr. ii. p. 211. 
,, Ubaghs, 1879. Descr. Geol. Pal. Limb. p. 224. 
reticulata {non Hag.), d’Orbigny, 1853. Bry. Cret. p. 965. 
,, Winkler, 1864. Musee Teyl., Cat. Pal. livr. ii. p. 211. 
,, Ubaghs, 1879. Descr. Geol. Pal. Limb. p. 225. 
Lichenopora ,, Hennig, 1894. Bry. Sver. Krit. ii., Cycl. : Lunds Univ. 
Arsskrift, vol. xxx., Acta Physiogr. No. viii. p. 33. 
Domopora ,, {non Hag.), Hamm, 1881. Bry. mastr. Ob. -Sen. i., Cycl. 
p. 43. 
,, {Defrancia) reticulafa,\m%, Fifth Report : Rep. Brit. Assoc. 
1884, p. 151. 
non Tecticavea holeiiformis, d’Orbigny, 1854. Bry. Cret. p. 991, pi. 781, 
figs. 8-12. 
Defrancia obvallaia, Marsson, 1887. Bry. Riig. : Pal. Abb. vol. iv. p. 38, 
pi. iii. fig. 12. 
Diagnosis. 
Zoarium discoid, circular, or oval ; attached by a broad flat 
base with a short broad stalk, or sessile. In the middle of 
the upper surface is a large central depression, whence radiate 
from about twelve to twenty rays, formed of raised groups 
of peristomes. These rays are fusiform, lanceolate, or clavate. 
Secondary rays occur between the larger rays. Each ray 
is bounded by a calcareous lamina. The rays are separated 
