98 
BEREJiriCEA. 
Diastopora disciformis, von Hagenow, 1851. Bry. Maastr. Kr. p. 16, pi. x. fig. 7. 
>> ,, Schliiter, 1870. Geogn. Keise sudl. Schw. : Xeu. Jahrb. 
1870, p. 939. 
j, ,, Hamm, 1881. Bry. mastr. Ober-Sen. p. 25. 
,, ,, pars, Marsson, 1887. Bry. B,iig. : Pal. Abb. vol.iv. p. 15. 
,, Stolly, 1892. Kreide Schl. Holst. : Mitt. min. Inst. Kiel, 
vol. i. pt. 4, p. 245. 
,, feeunda, pars, Vine, 1890. Bry. Bed Chalk: Quart. Journ. Geol. 
Soc. vol. xlvi. p. 476. 
,, „ Vine, 1891. Polyz. Bed Chalk: Proc. Yorks. Geol. 
Soc. vol. xi. p. 379. 
,, radians {non Xovak), Vine, 1890. Op. cit. p. 477. 
,, ,, {non Xovak), Vine, 1891. Op. eit. p. 380. 
Diagnosis. 
Zoarium small, circular; the disc is thick in the middle and 
thinner near the margin. AValls faintly wrinkled. 
Zooecia cylindrical, large, of medium length ; they are usually 
visible throughout. 
Apertures sparsely scattered, irregular in distribution. Peris- 
tomes low. 
Dimensions. 
Estimated from 
von Hagenovr’s 
figure. 
Distance of apertures in same 
longitudinal series ... * 2-* 35 mm. 
Diameter of zooecia ... *1 ,, 
Diameter of apertures ... *06 „ 
Distribution. 
England : 
Middle Chalk : Chatham. 
Bed Chalk : Hunstanton. 
B.M. 
D. 2988. 
•2-'4 mm. 
•15 „ 
•1 M 
Foreign : 
Senonian — Maastrichtian : Maastricht. 
Campanian : Biigen, in Mucronatenkreide ; Lagerdorf, 
Schleswig-Holstein, in Quadratenkreide. 
Figures. 
PI. YI. Fig. 2. Half a zoarium, X 14 dia. Chalk. Loc. ? Old 
Coll. D. 2988. 
