ACTINOPORA. 
13 
DiMENSIOiVS. 
Short -spoked 
variety. 
D. 2G9.0. 
PI. I. Fig. h. 
, Long-spoked 
variety. 
I D. 3109. 
PL I. Fig. 4. 
1 A"ar. snhduci- 
formis. 
\ i). 424.5. 
PI. I. Fig. 6. 
mm. 
mm. 
mm. 
Diameter of zoarium 
2-7 X 2-3 
3-3 X 4-1 
0 
Thickness of zoarium 
about -4 
•5 
•7 
Number of rays 
about 20 
(of each colony) . 
about 36 
about 50 
Length of rays 
Breadth of selvage ... 
up to 1-3 
up to 1-8 ‘ 
i 
up to 3 
DiSTRIBtJTIOX. 
English : 
Upper Chalk: Bromley, Kent; Norwich. 
Middle Chalk — Zone of Micraster cortesUidinarium : Chatham. 
Foreign : 
Danian : Faxoe ; ? Ciply.^ 
Senonian — Campanian: Meudon, near Paris ; Karlshanm, Sweden. 
Santonian : Saintes, Charente-Infcrieure ; Eomorantiu, Loir- 
et-Cher. 
Coniacian: l^es Roches, Loir-et- Cher ; Tours; Fecamp, Seine- 
Inf crieure. 
Senonian general: Pons, Charente-Inferieure ; Sarstedt, Germany. 
Cenomanian — Lower Planer (A’ar. suhdisciformis) : Schillinge, near Bilin, 
Bohemia ; Strehlen, Saxony. 
Figures. 
PI. I. Fig. 4. A zoariuni of the long-spoked variety, attached 
to a fragment of Eclnnocorys scutatus] x 10 dia. Upper Chalk: 
Bromley, Kent. Bowerbank Coll. D. 3109. 
PI. I. Fig. 5. A zoarium of a ymung, short-spoked variety ; 
X 10 dia. Middle Chalk — zone of Micraster cortestudinarium \ 
Chatham. Vine Coll. D. 2695. 
PI. I. Fig. 6. A heaped zoarium of the var. suldisciformis 
(d’Orb.) ; X 7 dia. Middle Chalk — zone of Micraster cortestudi- 
narium : Chatham. Gamble Coll. D. 4245. 
^ The Ciply specimens may come from the lower horizon at Ciply, which is 
Campanian. 
