78 
BEEENICEA. 
here referred to B. papyracea agree closely with the Lower 
Greensand specimen (46,802) figured as a B. gracilis, in which 
the proportions are identical with those of the type of B. gracilis^ 
Fig. 2. — Berenicea papyracea (Orb.) ; part of a zoarium with a gonoecium, 
X 10 dia. Ober Kreide: Marsupite zone. Sudmerberg, Brunswick. 
Saemann Coll. D. 5154. 
only the zocecia are twice as large. The difficulty of using 
dimensions is illustrated by this species : thus the dimensions 
recorded hy M. Pergens are quoted in the first column : 
Pergens, p. 335. Pergens. pi. xi. fig. 10. 
Transverse zooecial diameter ... •! mm. ... *08 mm. 
Aperture [orifice] -03 ,, ... *04 „ 
“La distance” ‘o-'G ,, ... -2-1-08 ,, 
But Pergens’ figure of the species on pi. xi. fig. 10 is 
said to be magnified 14 diameters : estimated from that figure 
the same three characters have the dimensions given in the 
second column; the diameter of the aperture is half the diameter 
and not less than a third, while the length of the zocecia varies 
from two-fifths to almost eleven-sixths of M. Pergens’ estimate. 
B. papyracea, by its long and sinuous zocecia, resembles the 
Jurassic B. parvituhulata, Greg.,‘ hut the zocecia are much thicker 
than in that Bathonian ‘ species.’ 
By the great separation of the apertures this ‘ species ’ resembles 
the Pliocene B. simplex (Busk), 2 in which the zoarium is thicker 
and more wrinkled. In the living B. suhorhicularis (Hincks) ^ 
the zocecia are also very elongate, but they are not immersed in 
a wrinkled zoarium, and they are punctate. The Berenicea comata 
of von Beuss is crushed, and thus cannot be definitely determined 
from the figure ; hy the great length of the zocecia and their 
sinuous course it agrees with B. papyracea, hut it has points which 
suggest an affinity to B. folium. 
^ Cat. Jur. Bry. p. 95, pi. iv. figs. 5, 6. 
2 Biastopora simplex. Busk. Crag Polyz. p. 113, pi. xx. fig. 10. 
3 Hincks. Brit. Mar. Polyz. p. 464, pi. Ixvi. figs. 11, 11a; the name was 
proposed to replace B. simplex (Busk), 
