42 Dr. J. W. Gregory — A Revision 



Diastopora diluviana, pars, Vine, 1884, Polj'z. Richmond Boring, 



Quart. Journ. Geol. See. vol. xl. p. 787. 

 Diastopora LamowoxLxi (non Edw.), Vine, 1884, ibid. p. 789. 

 Diastopora microstoma, pars, id. ibid, p. 788. 



Diagnosis. — Zoarium an irregular thin encrusting sheet. 



Zccecia visible throughout. The distal portions are reflexed 

 at right angles. The general aspect has therefore that of a 

 number of rings scattered over a thin crust. The raised 

 portions taper slightly towards the free end. 



Peristomes highly raised. Orifices circular. 



Ocecia somewhat pyramidal. 



Formula. — 3 1 2 t *. 



Distribution. — Great Oolite, near Bath and Richmond. 

 Bathonian of France and Germany. 



2. Berenicea compressa (Goldfuss), 1829. 



Aulopora compressa, Goldfuss, 1829, Petref. Germ. Bd. i. p. 84, 



pi. xxxviii. tig. 17. 

 Stomatopora compressa, Bronn, 1848, Ind. Pal., Nomen. p. 1201. 

 Celkpora compressa, Quenstedt, 1851, Flozgeb. Wiirttemb. ed. 2, p. 357. 

 Diastopora comjjressa, Quenstedt, 1852, Haudb. Petref. p. 637, pi. Ivi. 



tigs. 11, 12. 

 Bere)iicea comp>ressa (excl. syn.), Waagen, 1868, Zone Amm. Sowerhyi, 



Geogn. pal. Beitr. Bd. i. p. 645. 

 Diastopora Lamourouxi, pars, M.-Edwards, 1838, M6m. Cris., Ann. Sci. 



nat. Zool. s6r. 2, t. ix. p. 225. 

 Aulopora Jlahellulum, Quenstedt, 1881, Petref. Deutsch. Bd. vi. Abt. 1, 



p. 112, pi. 147. Mg. 27. 

 Berenicea itisiynis, Reuss, 1867, Bry. braun. Jura Balin, Denk. k. Akad. 



Wiss. Wien, Bd. cxxvii. p. 6, pi. i. figs. S a, 4 b. 

 Diastopora stomatopoi-ides, Vine, 1881, Notes Diastoporidse, Quart. 



Journ. Geol. Soc. vol. xxxvii. p. 384, pi. xix. figs. 1-10. 



Diagnosis. — Zoarium thin, irregular, in flabelliform sheets, 

 sometimes suborbicular in shape. 



Zooecia very long, cylindrical, visible throughout their 

 length. Some zooecia expanded just below the orifices. 

 Zooecia sinuous, punctulate. 



Peristomes very slightly raised, distant, very irregularly 

 arranged. 



Ocecia large ; low rounded domes or pyriform ; coarsely 

 punctulate. 



* The formulae are used as explained in Ann. & Mag. Nat. Hist. ser. 6, 

 vol. XV. p. 227, with the following additions : — The fourth term indicates 

 shape of zoarium, d being discoid, i irregular, and / flabelliform. The 

 final number shows the distance between the peristomes, being scat- 

 tered, 1 slightly crowded, 2 crowded, and 3 very crowded. 



The new species will be figured in a forthcoming British Museum 

 Catalogue. 



