170 
CEBIOPORID^. 
9. gillieroni (de Loriol), 1869. 
Syn. Reptomidticava gillierotii, de Loriol & Gillieron, 1869. Mon. Urg. inf. 
Landeron : Mem. Soc. helvet. Sci. nat. 
vol. xxiii. p. 41, pi. iii. figs. 5-8. 
Char. — A fungiform zoarium of which an average specimen has a stalk about 
10 mm. in diameter and a cap 16 mm. in diameter, and height of 19 mm. The 
zooecia are minute, and there are 80-100 apertures per sq. mm. Apertures 
circular to elliptical. 
Distrib. — Lower Urgovian : Landeron, Xeuchatel. 
Aff. — Its nearest ally is C. fungiformis, from which it differs by having about 
four times as many apertures per sq. mm. 
10. incrustans, von Reuss, 1846. 
Syn. Ceriopora incrustans, von Reuss, 1846. Verst, bohm. Kr. p. 63, pi. xiv. 
fig. 8. 
Char. — Zoarium small ; zooecia very small ; apertures circular, barely visible to 
the naked eye, crowded. Walls on the surface slightly raised. 
Distrib. — Cenomanian — Lower Planer : Schillinge, near Bilin, Bohemia. 
Aff. — A near ally of C. collis (d’Orb.), but with more crowded apertures. 
11. ? irregularis (Michelin), 1847. 
Syx. Chcetetes irregularis, Michelin, 1847. Icou. Zooph. p. 306, pi. Ixxiii. fig. 2. 
Reptomulticava irregularis, d’Orbigny, 1854. Bry. Cret. p. 1038, pi. 791, 
figs. 15, 16. 
,, ,, Pergens, 1890. Rev. p. 387. 
? ,, ,, Gamble, 1896. Cat. Bry. Chatham, p. 4. 
Rohjtrema marticensis, d’Orbigny, 1850. Prod. Pal. vol. ii. p. 209. 
Ceriocava irregularis, d’Orbigny, 1854. Bry. Cret. p. 1018, pi. 788, 
figs. 15, 16. 
,, ,, Toucas, 1873. Terr. cret. Beausset: Mem. Soc. geol. 
France, ser. 2, vol. iv. pp. 41, 44. 
Ceriopora {Ceriocava) irregularis, Pergens, 1890. Rev. p. 387. 
Char. — Zoarium massive to dendroid ; the upper surface is mammillated with 
numerous low, blunt elevations, which pass into thick; short, cylindrical 
branches. Apertures angular, very crowded, large. 
Distrib. — Turonian : Martigues and 1’ etang de Caronte, Benches -du- Rhone ; 
Beausset and Mazaugues, Var; Soulage, Aude. 
Aff. — This species varies from the lobed zoarium of d’Orbigny’s Reptomulticava 
irregularis to the blunt digitate branches of Chcetetes irregularis of IVlichelin, 
and to the dendroid form of Ceriocava irregularis, d’Orb. All these forms 
seem to be varieties of one species. D’Orbigny’s figures of his Reptomulticava 
irregularis give evidence of a lamellar structure ; but if the specimen be 
multilamellar, then it must be distinct from his Ceriocava irregularis. 
