220 
ENTALOPHORA. 
Entalophora proboscidea , var. rustica^ Pergens, 1895. Bry. Cachemb. : Bull. 
Soc. beige Geol. vol. viii. p. 182. 
,, ,, Canu, 1897. Bn’. Jan. : Bull. Soc. geol. Fr. ser. 3, 
vol. XXV. p. 153. 
,, ,, Canu, 1897. Bry. St. Cal.: ibid. p. 745. 
,, madreporacea, pars, Bucaille, 1890. Op. cit. p. 507. 
Diagnosis. 
Zoarium tufted of fine cylindrical shoots. The branches are very* 
thin at the distal ends (var. suhgracilis, Orb.), thicker near 
the base (form rustica, Hag.), where they may be somewhat 
broadened and compressed (form rustica, Orb.). 
Zooecia few in number; the apertures are very distant and 
irregularly distributed. The walls may be smooth or 
transversely wrinkled in the thicker forms. 
Peristomes well raised and reflexed distally; worn flush with 
the surface in the proximal parts. 
Gonoecium small; piriform or subconical. 
Dimensions. 
Fide 
Fide 
B.M. 
B.M. 
B.M. D. 376. 
Pergens. 
Waters. 
D. 461. 
D. 4516. subgracilis. 
Diameter of branch 
— 
— 
•6 mm. 
1 mm. *3 mm. 
Diameter of zooecia 
•26-*32 mm. 
— 
•3 „ 
•3--5 „ -2 „ 
Diameter of aperture 
•10--12 ,, 
*16 mm. 
•9 
- 
•2--25 „ -12 „ 
Distribution. 
British : 
Upper Chalk : Gravesend ; Bromley ; Kent ; Magee Island, Antrim ; 
Slieve Gallion and White Abbey, Derry. 
Middle Chalk : Chatham. 
Chalk Detritus : Charing. 
Upper Greensand : Cambridge. 
Foreign : 
Danian : Faroe. 
Senonian — Maastrichtian : Maastricht; Falkenberg ; Fauquemont ; 
Ciply ; Ste. Colombe, Manche, in Craie a baculites ; 
Fecamp, Seine-Inferieure ; Meudon; Chapet, Seine-et- 
Oise ; Royan. 
Campanian : Lagerdorf, in Quadratenkreide ; Riigen ; 
S. Sweden. 
Santonian ; Arche de Leves and Cachembach, near 
Chartres; Saintes, Pons, Perignac, etc., Charente- 
Inferieure. 
