DIASTOPORA. 
137 
8. marginata (d’Orbigny), 1853. 
Syx. Meseuttripora marginata, d’Orbigny, 1853-4. Bry. Cret. p. 809, 
pi. 785, tigs. 1-3. 
>» j, de Loriol, 1868. Val. Arz. : Pal. Suisse, 
ser. 4, pt. 2, p. 62. 
M de Loriol, 1869. IJrg. Land. : Mem. Soc. 
helv. Sci. uat. vol. xxiii. p. 39, pi. iii. fig. 2. 
Diastopora ,, Pergens, 1890. Eevisiou, p. 336. 
Char. — Zoarium bilaminar ; very thin. Peristomes promiueut ; very widely 
scattered ; irregular in arrangement. 
Distrib. — Xeocomian : Saiute Croix and Arxier, Yaud ; Landeron, Xeiicliatel. 
9. mutata, Pergens, 1890. 
Syx. Diastopora papyracea, d’Orbigny, 1853-4. Bry. Cret. p. 830, pi. 758, 
figs. 14-16 ; non 1851, pi. 641, figs. 3, 4. 
,, mutata, Pergens, 1890. Kevision, p. 335. 
,, ,, Pergens, 1892. Nouv. Cycl. Cret.: Bull. Soc. 
beige Geol. vol. iv., Mem. p. 278. 
Char. — Zoarium of verj’ thin, flat sheets. Apertures distant, and quincimcial in 
arrangement. Peristomes prominent. 
Distrib. — Senonian — Maastrichtian : Meudou ; Fecamp ; Sainte Colombe. 
Santonian : Saintes, Pecine, and St. Leger. 
Coniacian : Tours, Joue. 
Turonian : Yendome, Yareunes, Troot, Souge, and Les Roches, 
Loir-et-Cher ; St. Germain, Sarthe ; Plauen, Saxony. 
10. papyracea (cPOrbigny), 1853. 
Sy.v. Bidiastopora papyracea, d’Orbigny, 1853-4. Bry. Cret. p. 805, pi. 756, 
figs. 1-3. 
,, ,, Pergens, 1890. Revision, p. 375. 
Char. — Zoarium of narrow, dichotomous branches, each from eighteen to 
twenty zocecia in width. Zocccial characters doubtful. 
Distrib. — Senonian : Pons and Perignac, Chareute-Inferieure. 
11 . pustulosa (von Hagenow), 1851. 
Syx. Cavaria pustulosa, von Hagenow, 1851. Bry. Maastr. Kr. p. 54, pi. vi. fig. 2. 
,, ,, d’Orbigny, 1854. Bry. Cret. p. 798. 
? ,, ,, Staring, 1860. Bod. Xedeii. vol. ii. p. 402. 
,, ,, Marsson, 1887. Bry. Riig. : Pal. Abb. vol. iv. p. 18. 
Diastopora ,, Hamm, 1881. Bry. mastr. Ob. -Sen. p. 25. 
,, subpustulosa, d’Orbiguy, 1854. Bry. Cret. p. 827. 
Char. — Zoarium thick, tubular, dichotomous, wdth zocecia opening on one face 
only. Zocecia crowded. Apertures irregularly distributed. Peristomes low. 
Distrib. — Senonian — Maastrichtian : Maastricht. 
Campanian: Riigen. 
13 . remensis, Peron, 1888. 
Syn. Diastopora remensis, Peron, 1888. Craie S.E. Anglo-Par. ; Bull. Soc. 
Sci. nat. Y'onne, vol. xli. pp. 225, 347, pi. iii. fig. 27. 
