TitOCHTLIOPOKA. 
265 
, mamillata, Meunier & Pergens, 1885. 
Syk. Clamacamerapora mamillata, S c 1885. Xouv. Bry. Cret. 
Sup.: Arm. Soc. raalac. Belg. vol. xx., 
Mem. p. 35, pi. ii. figs. 2, 3. 
,, ,, Ubaghs, 1888. C.B. Excursion : Bull. Soc. 
beige Geol. toI. i., Mem. p. 221. 
Char. — Zooccial groups including from sixteen to forty zooecia. About eleven to 
fourteen groups on border of the zoarium. 
Distrib. — Senonian — Maastricbtian : Third Bryozoan bed at Fauquemont and 
Glavant, Limburg. 
CUPYACAMERAPORA, Meunier & Pergens, 1885. 
Char. — The lamina? which separate the groups of zooecial apertures are strongly 
recurved and very thick. 
Type Species. — C. cretacea, Meunier & Pergens, 1885. Senonian — Maas- 
trichtian : Limburg. 
cretacea, Meunier & Pergeus, 1885. 
Syn. Curvacameropora cretacea^ Meunier & Pergens, 1885. Op. cit. p. 36, pi. ii. 
fig. 5. 
,, ,, PTbagbs, 1888. C.E. Excursion: Bull. Soc. 
beige Geol. vol. i., Mem. p. 221. 
Char. — Zoarium 1cm. in diameter and 5 to 8 mm. high. Each group of 
apertures includes those of thirty to forty zooecia, arranged in four to five rows. 
Five to nine groups to each zoarium. 
Distrib. — Senonian — Maastrichtian : lowest bed at Fauquemont ; and Glavant, 
Limburg. 
TROCHILIOPORA,' Gregory, 1909. 
[New Cret. Bry. : Geol. Mag. dec. v. vol. vi. p. 65.] 
Diagnosis. 
Radioporidse with a simple top-shaped or capitate zoarium, 
composed of a constricted stem and expanded head. 
Apertures in vertical series on the margin of the head. 
Type Species. 
TrocMliopora Jiumei, Greg. Dpper Chalk : Gravesend. 
Affinities. 
This genus is founded for two Cretaceous species, which are 
members of the Radioporidae, as they are dimorphic and have 
the zooecia arranged in radial groups. Its nearest ally is Biscocavea, 
1 From rpoxiy^ia, a pulley, as the zoarium resembles a pulley-wheel and its axis. 
