154 Dr. J. W. Gregory — A Revision 



Peristomes well raised ; zooecia fusiform. The distribution 

 of the peristomes is along irregular curved lines ; but in some 

 places the linear arrangement is not apparent. 



Formula.— -2 1 I" (r) 2. 



Distribution. — England : Inferior Oolite — Forest Marble. 

 Foreign : Bajocian, Germany ; Bathonian, France and 

 Austria. 



4. Diastopora lamellosa, Mich., 1846. 



Diastopora lamellosa, Michelin, 1846, Icon. Zooph. p. 241, pi. lvi. 



fig. 11. 

 Mesenteripora lamellosa, Sauvage, 1889, Bry. Jur. Boul., Bull. Soc. geol. 



France, ser. 3, t. xvii. p. 50. 

 Non Bidiastopora lamellosa, d'Orbigny, 1850, Prod. Pal. t. ii. p. 266. 

 Eschara Ranvilliana, Michelin, 1846, op. cit. p. 243, pi. lvii. fig. 12. 

 Elea Ranvilliana, d'Orbigny, 1852, Pal. franc., Terr. cret. t. v. p. 628. 

 Later •omultelea Ranvilliana, d'Orbigny, 1852, op. cit. p. 629. 

 Diastopora cervicornis, Michelin, 1846, op. cit. p. 241, pi. lvi. fig. 12. 

 Bidiastopora cervicornis, d'Orbigny, 1849, Prod. Pal. t. i. p. 317. 

 Elea cervicornis, d'Orbigny, 1852, Pal. franc., Terr. cr£t. t. v. p. 628. 

 Bidiastopora ramosissima, d'Orbigny, 1849, Prod. Pal. t. i. p. 317. 

 Diastopora ramosissima, Haime, 1854, op. cit. p. 190, pi. ix. fig. 3. 

 Elea ramosissima, d'Orbigny, 1852, Pal. franc., Terr. cret. t. v. p. 628. 

 Bidiastopora luciana, d'Orbigny, 1849, Prod. Pal. t. i. p. 317. 

 Multispursa luciana, d'Orbigny, 1852, op. cit. p. 870, pi. 761. figs. 1-3. 

 Diastopora luciana?, Haime, 1854, op. cit. p. 191. 

 Diastopora fenestrata, Reuss, 1867, Bry. braun. Jura Balin, Denks. k. 



Akad. Wiss. Wien, Bd. cxxvii. p. 11, pi. ii. fig. 5. 



Diagnosis. — Zoarium bilaminate, forming either thin, 

 broad, crumpled fronds or thick narrow branches. 



Zooecia short and broad, fusiform. 



Peristomes slightly raised, not crowded, quincuncially 

 arranged. 



Formula. — 1 2 1 r 0. 



Distribution. — England : Inferior Oolite — Bradford Clay. 

 Foreign : Bajocian, Germany ; Bathonian, France and 

 Austria. 



5. Diastopora calloviensis (d'Orbigny), 1852. 



Elea calloviensis, d'Orbigny, 1852, Pal. franc., Terr, cre't. t. v. p. 629. 

 Diastopora calloviensis, Haime, 1854, Bry. Jur., Mem. Soc. geol. France, 



s6r. 2, t. v. p. 191. 

 ? Diastopora subramosa, Waagen, 1868, Zone Amm. Soioerbyi, Geogn. 



Pal. Beitr. Bd. i. Heft 3, p. 645, pi. xxxiii. figs. 9, 10. 



Diagnosis. — Zoarium of loose tufts, composed of bands 

 which branch irregularly ; bilaminate. 

 Zooecia long, broad, and regular in shape. 





