82 
BEEENICEA. 
Biastopora echinata, d’Orbigny, 1851, Bry. Cret. pi. 641, figs. 1, 2. 
,, papillosa, forma echinata^ Vine, 1893. Eep. Cret. Polyz. : Kep. 
Brit. Assoc. 1892, p. 308. 
Berenicea echinata, d’Orbigny, 1854. Bry. Cret. p. 868. 
„ „ Brauns, 1875. Sen. Salzberg: Zeit. ges. Naturw. toI. ilvi. 
p. 401. 
Berenicea hagenowi, von B,euss, 1854. Kr. Schicbt. Ostalp. : Denk. Akad. 
'Wiss. Wien. vol. vii. p. 136, pi. xxviii. fig. 6. 
non ,, ,, von Keuss, 1872. Bry. unt. Plan.: Palaeontogr. vol. xx. 
pt. 1, p. 109, pi. xxvi. fig. 12. 
non Biastopora hagenowi, Vine, 1889. Greensd. Polyz. : Proc. Yorks. Geol. 
Soc. vol. xi. p. 266, pi. xii. fig. 9. 
Biastopora disciformis, pars, Hamm, 1881. Bry. mastr. Ober-Sen. p. 25. 
DiAGIfOSIS. 
Zoarium circular, elliptical, or somewhat irregular; thin, but 
often large. 
Zooecia cylindrical, very crowded. In young zoaria the zooecia 
are visible throughout, but in adult forms they are immersed, 
except at the distal end. The walls are plain. 
Apertures arranged in linear series, or quincuncial, or locally 
irregular. 
Peristomes slightly raised (form oceanica), or the distal end may 
be reflexed and well raised (form papillosa). 
Gonocysts large and irregular ; usually in long ridges, transverse 
to the zooecia ; there may he several concentric series. 
Dimensions. 
Fide Pergens. 
Distance of apertures in same 
longitudinal series ... — 
Diameter of zooecia ’H-'ld mm. 
Diameter of apejtures ... '04--06 ,, 
Distribution. 
Bkitish : 
Upper Chalk : Norwich,. Charlton, Bromley. 
Middle Chalk : Chatham. 
Lower Chalk : Folkestone. 
B.M., 24,887. 
•3-*9 mm. 
•2--3 „ 
•15--2 „ 
Foreign : 
Danian: Faxoe. 
Senonian — Maastrichtian : Fecamp and Dieppe, Seine-Inferieure ; 
Meudon, near Paris ; Ste. Colombe, Manche, in Craie 
a haculites ; Mons and Maastricht {fde Staring) . 
Campanian: Eeims, Marne, in zone of Micraster fastigiatus. 
