350 
INYEESAEIA. 
Diagnosis. 
Eleidee with erect zoarium formed of a central axial bundle 
surrounded by one or more layers of zooecia. 
Avicularia spatulate. 
Type Species. 
Ceriopora tuhiporacea, Goldfuss, 1827. Maastricbtian : Maastricht. 
Affinities. 
The members of this genus have the general characters of 
Meliceritites^ but differ by the presence of the external lamell® 
covering the central axial bundle. Young branches in some 
species may be indistinguishable from Meliceritites ; but, as shown 
in section (Eig. 42), the external lamella in other species is 
continued to the summit of the branches. 
Waters regards the zooecia of the external lamellae as growing 
from a plate which closes the aperture in the subjacent zooecia ; 
but he adds, “as to the meaning of this extraordinary origin of 
the new zooecia I would not attempt an explanation.” * Whether 
this “extraordinary” arrangement is of genenc value is perhaps 
doubtful. But until the origin of this arrangement is explained 
Inversaria may be conveniently retained. 
1. Inversaria tubiporacea (Goldfuss), 1827. 
Synonymy. 
Ceriopora tubiporacea, Goldfuss, 1827. Petref. Germ. vol. i. p. 35, pi. x. fig. 13. 
,, ,, Morren, 1829. Cor. foss. Belg. : Ann. Acc. Groning. 
1828, p. 40. 
,, ,, von Hagenow, 1840. Mon. Riig. pt. ii. : N. Jabrb. 1840, 
p. 647. 
,, ,, von Eeuss, 1846. Verst, bohm. Kr. p. 63. 
,, ,, pars, Giebel, 1848. Planerm. Quedlinb. : Zeit. Zool. 
Zoot. vol. i. p. 17. 
de Blainville, 1834. Man. Act. p. 405. 
von Hagenow, 1851. Bry. Maastr. Kr. p. 58, pi. vi. fig. 9. 
Staring, 1860. Bod. Nederl. vol. ii. p. 396. 
Winkler, 1864. Mus. Teyl. : Cat. Pal. hvr. ii. p. 209. 
pars, Hamm, 1881. Bry. mastr. Ob. -Sen. p. 39. 
Ubagbs, 1879. Geol. Pal. Limb. p. 222. 
Petref. Germ. vol. i. p. 34, pi. x. 
Alveolites 
Inversaria 
Melicerites 
Ceriopora milleporacea, Goldfuss, 1827. 
fig. 10. 
1 Waters. CMl. Char, in Melic. : Ann. Mag. Kat. Hist. ser. 6, vol. viii. 
1891, p. 52. 
