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CERIOPORID^. 
rNREPRESENTED SPECIES. 
1. aptiensis (d’Orbigny), 1854. 
Syn. Ceriocava aptiensis, d’Orbigny, 1854. Bry. Cret. p. 1017. 
Char. Branches 4-5 mm. diameter, anastomosing. Zooecial characters un- 
known. 
Distbib. — Aptian : Sainte-Croix, Yaud. 
2. arduennensis (d’Orbigny), 1850. 
Syn. Ceriopora polymorpha (non Goldf. ), Michelin, 1841. Icon. Zooph. p. 2, 
pi. i. fig. 4. 
Folytrema arduennensis, d’Orbigny, 1850. Prod. Pal. vol. ii. p. 143. 
Reptomulticava arduennensis, d’Orbigny, 1854. Bry. Cret. p. 1034. 
Char. — Massive, nodular zoarium ; surface somewhat variolate. Pores very 
small, circular, crowded. 
Distrib. — Aptian: Orandpre, Belgium. 
Aff. — The Ceriopora polymorpha of Ooldfuss (Petref. Germ. p. 34, pi. x. fig. 7, 
and pi. XXX. fig. 11) from Essen does not appear to belong to the Bryozoa. 
3. ? bovista, von Hagenow, 1846. 
Syn. Ceriopora bovista, von Hagenow, 1846. In Geinitz, Grundr. Yerst. vol. ii. 
p. 595, pi. xxiiiB, fig. 10. 
Char. — A small clavate zoarium with crowded, irregularly arranged, equal 
apertures. 
Distrib. — Senonian — Campanian: Scania, Sweden. 
4. Pcaespitosa, Romer, 1840. 
Syn. Ceriopora ccespitosa, Eomer, 1840. Yerst. nordd. Kr. p. 22, pi. v. fig. 28 
(not fig. 29 as misprinted) . ^ 
,, ,, Geinitz, 1840 and 1842. Char, sach.-bohm. Kr. 
pt. ii. p. 93, pi. xxiii. fig. 7 ; pt. iii. p. xx. 
,, ,, von Eeuss, 1846. Yerst. bohm. Kr. p. 63. 
Char. — Large massive zoarium, composed of closely attached, radial, dichotomous 
columns, which project on the upper surface as rounded tubercles. Eomer 
describes the pores as small and hexagonal. 
Distrib. — Senonian — Santonian (Kreidemergel) : Siidmergberg, near Goslar. 
(Planerkalk) : Eadowessitz and Kutschlin, 
Bohemia ; Hundorf, Saxony. 
Aff. — The columnar structure of the zoarium is a character common in 
Radiopora, but not in Ceriopora. However, there is no evidence that the 
apertures are radial, so the species is doubtfully retained in Ceriopora. 
