200 
HETEROPOKID^. 
7. coronata, von Reuss, 1872. 
Syk. Seteropora coronata, von Reuss, 1872. Bn,-, unt. Quad. : Pala'ontogr. 
vol. XX. pt. i. p. 130, pi. xxxii. tigs. 6, 7. 
Char. — Zoariuni of cylindrical branches of 3 to 4 mm. in diameter. Mesopores 
uniserial. Apertures about -3 mm. in diameter. Distance of zooecial centres 
from *4 to *7 mm. 
Distrib. — Cenomanian — Lower Quader : Plauen, Saxony. 
Aff. — This species is a close ally of H. orhignyi, but has narrow branches, and 
the zooecia are larger. Thus the diameter of the apertures in this species is 
•3 mm., whereas in H. heepxngx (p. 190) it is ’lo mm. 
8. crassa, pars^ von Hagenovr, 1851. 
Syn. Ceriopora micropora, pars, Goldfuss, 1827. Petref. Germ. vol. i. p. 33, 
pi. X. fig. 4a (»iow Ad). 
Seferopora crassa, pars, von Hagenow, 1851. Br)*. maastr. Kr. p. 4G, 
pi. V. tig. 13 {non 12). 
,, ,, ,, Kade, 1852. Los. Verst. Schanzenb. p. 32. 
,, ,, ,, d’Orbigny, 1854. Bry. Cret. p. 1070. 
? Multicavea crassa, Hamm, 1881. Bry. niastr. Ob. -Sen. i., Cycl. p. 40. 
Char. — Zoarium nodular, with a broad base, and expanding above ; it is short 
and cylindrical, with convex upper surface. ^lesopores usually one line 
between the zooecia. 
Dimensions. 
mm. 
Zoarium; height 18 
,, diameter... ... ... .. 9-11 
Zooecia: number per sq. mm. about 13 (von Hagenow, fig. 13</). 
Distrib. — Senonian — Maastrichtian : Maastricht. 
Aff. — The species, as here restricted, does not include the branching zoarium 
with from two to three lines of mesopores between the zooecia, sho^^^l by von 
Hagenow (Br)\ maastr. Kr. pi. v. fig. 12) ; for, according to Hamm, the 
apertures in that specimen are arranged in stellate groups, and he says that 
von Hagenow overlooked this character. That specimen may therefore be 
a new species, and may be a Radiopora. The type of the species, according 
to von Hagenow, is at Bonn. 
9. non decipiens, Peron, 1893. 
Syn. Keteropora decipiens, Peron, 1893. Descr. invert, foss. terr. cret. sud 
Tunisie, p. 353, pi. xxx. figs. 27-30. 
Char. — Zoarium of dichotomous branches, which are as much as 3 mm. in 
diameter. The zooecia are hexagonal in section, with an elliptical aperture. 
No mesopores. 
Distrib. — Turonian : Southern Tunis. 
