Polysoa and Antlwzoa from Upper Cretaceous Limestone. 9 



are immersed. Entalopliora Pergensi, Gregory,* which the above 

 definition would also include, has thinner branches and the apertures 

 still further apart than in E. virgula. 



This is the commonest species of Cretaceous Entalopliora and has 

 been found in most of the localities whence Cretaceous Polyzoahave 

 been recorded ; but only one specimen has been found among the 

 material here described. 



Distribution. Neocomian-Danian. 



ENTALOPHOEA CONJUGATA, von Eeuss. 

 Plate I., fig. 11. 



1872-3. Entalopliora conjugata, von Eeuss, Bry. unt. Quad. Palseon- 

 togr., vol. xx., part. L, p. 117, pi. xxix., fig. 8. 



Zoarium consisting of cylindrical branches ; the apertures are 

 distant from one another in a proximal-distal direction more than 

 four times the diameter of an aperture ; the apertures occur in rows 

 of two or three across the branch ; the zooecia are immersed and 

 their boundaries may be faintly marked. This form is very like 

 E. geminata f (von Hagenow), but the zooecia are shorter, the boun- 

 daries of the zooecia are less clearly marked, and the apertures occur 

 in groups of three instead of two as in E. geminata. A single 

 specimen of this species occurs among the material here described. 



Distribution. Cenomanian. 



ENTALOPHORA ECHINATA (Bomer). 

 Plate I., fig. 12. 



1840. Pustulopora cchinata, Eomer, Verst. Nordd. kr., p. 22, pi. v., 



fig. 23. 

 1846. Pustulopora ecliinata, von. Eeuss., Verst. Bohm kr., p. 64, 



pi. xiv., fig. 4. 



Zoarium consisting of cylindrical branches ; the apertures are 

 distant from one another in a proximal-distal direction about four 

 diameters of an aperture. There are about four apertures in the 

 breadth of a branch ; the diameter of the apertures is about 2 mm. ; 

 the zooecia are immersed, with their boundaries more or less apparent. 

 This species is very nearly allied to E. madreporacea (Goldfuss), 

 from which it differs in having the apertures slightly further apart in 

 a proximal-distal direction, the zocecial boundaries more prominent, 



* J. W. Gregory, Brit. Mus. Cat. Cret. Bry., vol. i., 1899, p. 226, pi. x., 

 figs. 5, 6, 7. 



f Pustulipora geminata, von Hagenow, Bry. Maas. kr., 1851, pi. i., fig. 11, p. 20, 



