BEEEXICEA. 
97 
FiGruEs. 
PI, TII, Fig. 5. A zoarium, X 10 dia. [Middle Chalk: 
Chatham. Gamble Coll. D. 429. 
Affes-ities. 
This species is characterized by its highly raised, free peristomes, 
and its irregular zoarium. Its nearest ally is B. regularis (Orb.}, 
of which it may be only a yariety. It differs from that species by 
the great elevation of the peristomes. In B. regularise gamhlei 
and amlitae the snb-erect habit of the zocecia leads to the raising of 
the apertures, but in these forms the zooecia are crowded, so that 
the peristomes are not free, and the apertures occur but slightly 
above the level of the thick zoarium. 
Among Cainozoic Bryozoa it most nearly resembles B. foliacea 
(Rss,),^ from the Austrian Miocene ; in the Tertiary form the 
peristomes are higher and more widely scattered. 
LIST OF SPECIMENS. 
D. 429. A loose zoarium (on slide). Middle Chalk. Chatham. Gamble Coll. 
Figd. PI. YII. Fig. 5. 
D, 624, A small zoarium encnisting a Vincularia stem (on slide). Middle 
Chalk. Chatham. Gamble Coll. 
D. 2845. Two small zoaria (on slide). Upper Chalk, Bromley, J. Simmons 
Coll. 
D. 3918. A large, free, broken zoarium (on slide). Middle Chalk. Chatham, 
Gamble Coll. 
D. 3919. Two irregular zoaria (on slide). Middle Chalk. Chatham. Gamble 
Coll. 
D. 3921. A large, irregular zoarium (on slide). Middle Chalk. Chatham. 
Gamble Coll. 
D. 3922. Two zoaria encrusting shell fragments (on slide). Middle Chalk. 
Chatham. Gamble Coll. 
D. 3923. Three irregular zoaria, with larger zocecia than usual (on slide). 
Middle Chalk. Chatham. Gamble Coll. 
7. Berenicea disciformis (Hagenow), 1839. 
Synonymy. 
Cellepora disciformis, von Hagenow, 1839. Mon. Riig. : Neu. Jahrb. 1839, 
p. 279. 
Diastopora ,, von Hagenow, 1850. In Geinitz, Quadersandst, p. 235. 
1 Tubulipora foliacea, von Reuss, Foss. Polyp. Wien. Tert. : Haturw. Abh. 
vol. ii. p. 49, pi. vii. fig. 5. 
H 
