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RADIOPOEID^, PLTJMATELLID^. 
4. suecica (Hennig), 1894. 
Syn. Lichenopora suecica, Hennig, 1894. Bry. Sver. Krit. ii., Cycl. : Lundg 
Univ. Arsskrift, vol. xxx., Acta Physiogr. No. viii. 
pp. 35-6, pi. ii. tigs. 33-6, and fig. 20, p. 35. 
? Geriopora stellifera, Scliliiter, 1870. Geogn. Pal. Reise siidl. Schweden : 
N. Jahrb. 1870, p. 939. 
Char. — Zoarium irregularly hemispherical, about 30-80 ram. in diameter and 
20 mm. thick. Sub-colonies irregular in shape and 3-4 mm. in diameter, 
widely separated. Radial apertures usually five or six in one series. Apertures 
•11mm. in diameter. 
Distrib. — Senonian — Campanian — Zone of Belemnitella mucronata (beds with 
Actinocamax mamillatus) : Balsberg, Gropemollan, and 6. Karup, Sweden. 
RADIOCAVARIA, Hamm, 1881. 
[Bry. mastr. Ob. -Sen. i., Cycl. p. 42.] 
Diagnosis. 
Eadioporidse with zoarium arborescent; dichotomously branched. 
The axes of the stems are hollowed and divided across by 
tabulae, as in Cavaria. 
Zooecia in stellate groups. 
Type Species. 
Radiocavaria fallax, Hamm. Maastrichtian : Maastricht. 
Afpinities. 
This Bryozoan, by its stellate groups of zooecia, agrees with 
Multicavea and Semimulticavea ; but, as Hamm describes the 
zooecia as being tabulate and dimorphic, it is probably an ally 
of Radiopora. It may be regarded as a Eadioporoid with an 
arborescent zoarium. 
HNEEPEESENTED SPECIES, 
fallax, Hamm, 1881. 
Syn. Radiocavaria fallax, Hamm, 1881. Bry. mastr. Ob. -Sen. i., Cycl. p. 42. 
Char. — Zoarium of thick cylindrical stems, dichotomously branched ; the aspect 
is hke Heteropora. Zooecial groups but slightly regular, round or elongate. 
The middle area of the groups is either depressed or raised. Zooecia small, 
thickly crowded. The larger apertures are about twice the diameter of the 
smaller ; they are widely spaced in radial series, containing about three, 
surrounded by a slightly raised rim, and raised into short ridges on the edge 
of the middle area. 
Distrib. — Senonian — Maastrichtian ; Maastricht. 
