86 
BERE2fICEA.. 
Distribution. 
England : 
Middle Chalk : Chatham. 
Foreign : 
Turonian : Gosau. 
Cenomanian : Cap de la H^ve. 
Affinities. 
This variety should perhaps be called var. oceanica, as it may 
be the same as that which d’Orbigny figured as a distinct species 
under that name. Yon Reuss’s figure, however, appears more 
distinctive and reliable, and his name is therefore accepted. 
The variety differs from the normal form by its lower, more 
distant peristomes, which are, however, much closer than in 
B. disciformis (Hag.). I at first regarded the specimens now 
included in this variety as only crowded forms of B. disciformis ; 
but the zooecia are smaller and shorter. 
LIST OF SPECIMEJIS OF THE SPECIES. 
British. 
D. 2614. A zoarium with a circular series of gonocysts. Middle Chalk. 
Chatham. Vine Coll. Figd. PI. V. Fig. 6. 
24,887. A large zoarium, with three young zoaria, encrusting Echinocorys 
scutatus. Fpper Chalk. Norwich. Bayfield Coll. Figd. PI. V. 
Figs, la, h. 
D. 2982. A zoarium, with broken gonocysts, encrusting a fragment of 
Echinocorys. Middle Chalk. Chatham. Vine Coll. Figd. PI. V. 
Fig. 8. 
D. 3917. A zoarium on an echinid fragment. Middle Chalk. Chatham. 
Gamble CoU. Figd. PI. V. Fig. 9. 
D. 3834. Two zoaria, encrusting a sponge fragment, with Stomatopora gracilis 
(Edw.) and Proloscina cornucopice (Orb.). Middle Chalk. 
Chatham. Gamble Coll. 
D. 959. A large irregular zoarium on an echinid fragment (on slide). 
Middle Chalk. Chatham. Vine Coll. Eecorded as Biastopora 
grandis, Orb., by Vine, 1893 : Eep. Brit. Assoc. 1892, p. 308, 
No. 18. 
D. 962. A zoarium of var. echinata, with the zoarial centre of growth 
excentric in position (on slide). Middle Chalk. Chatham. 
Vine Coll. Eecorded as Biastopora papillosa (Ess.) by Vine, 
1892 : op. cit. p. 308, No. 16. 
D. 492. Several young zoaria, encrusting a broken Echinocorys, sp, ; in the 
largest zoarium some of the zooecia are well reflexed, while in 
other zooecia the peristomes are low. Middle Chalk. Chatham. 
Gamble Coll. 
