ACTIXOPOEA. 
17 
Tvhich are triangular in shape and consist of multiserial zooecia 
at the outer end. Zoaria occasionally confluent. 
Distkibtjtion. 
Foreign : 
Danian : Faxoe ; Ciply ; Annetorp. 
Senonian — Maastrichtian : Maastricht, St. Pierre, and Bemelen ; Irnich, 
Eifel ; Sainte-Colombe, Manche. 
Lower Maastrichtian : Calcaire de Kunraed {jide Ubaghs). 
Campanian: Eiigen ; Ignaberga, Balsberg, etc., Sweden. 
Santonian — Planermergel : Quedlinburg. 
? Cenomanian : Baktschserai, Crimea {fide de Montperoux, de Verneuil, and 
Baily). 
Dimensions. 
D. 3462. 
D. 3451. 
D. 3451. 
mm. 
mm. 
mm. 
Diameter of zoarium 
4*6 X 0*5 
2 
2*5 X 3*5 
Internal diameter of zooecia 
o 
o 
oo 
— 
— 
Diameter of apertures 
— 
•08--1 
•08--12 
Figures. 
Fig. 12. A thin horizontal section, across a thick zoarium; 
X 10 dia. Maastrichter Kalk : Maastricht. Yan Breda Coll. 
D. 3462. 
J''ig.12. — Actinopora diadema\ x 10. Fig. 13. — Actinopora diadema. Part 
D. 3462. of horizontal section; x 20. D.3512. 
C 
