94 
BEEENICEA. 
LIST OF SPECIMEj^IS. 
D. 3886. A large zoarium encrusting an echinid fragment (on slide). Middle 
Chalk. Chatham. Gamble Coll. Figd. PI. VI. Fig. 7. 
D. 985. A zoarium of var. amhita encrusting an echinid fragment (on slide). 
Middle Chalk. Chatham. Vine Coll. The Eeptotubigera ramosa, 
var. disciformis^ Vine, 1892: Eep. Brit. Assoc. 1893, p. 30, 
No. 12. 
D. 978. A zoarium of var. amhita encrusting an echinid fragment "with 
Frohoscina anomala, Ess. (on slide). Middle Chalk. Chatham. 
Vine CoU. 
D. 3887. A thick zoarium of var. amhita encrusting a fragment of Echinocorys^ 
sp. (on slide). Middle Chalk. Chatham. Gamble Coll. 
D. 3925. A hilobed zoarium of var. amhita encrusting a fragment of 
Echinoeorysj sp. (on slide). Middle Chalk. Chatham. Gamble 
Coll. 
D. 3928. Six irregular, broken zoaria of var. amhita. Middle Chalk. 
Chatham. Gamble Coll. 
D. 4262. A zoarium of var. 
Chalk. Chatham. Gamble Coll. Fijr. 4, n. 93. 
5b. Berenicea regularis (Orb.), var. gamblei, nov. 
Yarietal Chaeacters. 
Zoarium very irregular ; thick. 
Zooecia large and stout ; very irregular in arrangement ; mainly 
immersed. Peristomes well raised. 
Dimensions. 
Distance of apertures of same 
longitudinal series 
Diameter of zooecia ... 
Diameter of apertures 
Disteibution. 
England : 
Middle Chalk : Chatham. 
Foreign : 
Cenomanian : Vdlers-sur-Mer. 
Figtjees. 
PI. YI. Fig. 8. Part of a zoarium, X 10 dia. Dpper Chalk : 
South of England. Purchased. B. 1756. 
PI. YII. Fig. 7. The margin of a zoarium, X 10 dia. 
Cenomanian : Yillers-sur-Mer. D. 4386. 
B.M., B. 1766. 
•4-'6 mm. 
•2--25 „ 
