46 Dr. J. W. Gregory — A Revision 



zooecia flabellate and visible throughout their length. Peri- 

 pheral zooecia more crowded and visible only in part ; surface 

 plain. 



Peristomes small, slightly raised, from £ to \ the width 

 of those of B. diluviana. 



Ooecia low, rounded domes, three or four times the width 

 of the zooecia. 



Formula.— 1 2 i 0. 



Distribution. — Cornbrash, Rushden; Bradford Clay, Brad- 

 ford ; Great Oolite, Richmond Boring. 



Affinities. — This species is characterized by the delicacy 

 and narrowness of its zocecia. It thus takes the place in the 

 Berenicea series held by S. Waltoni in the Stomatopora and 

 D. mettensis in the Diastopora series. 



Its nearest ally is B. diluviana, from which it differs only 

 in the size of the zocecia and the less elevation of the peri- 

 s-tome. It differs from B. undulata (Mich.) in the absence of 

 the wavy ridges which occur in that species, and also by the 

 size of the orifices. The smallness of the apertures reminds 

 one of the species described as B. microstoma by Haime. 

 This, however, is only a synonym of B. undulata (Mich.), 

 while the true D. microstoma of Michelin is referred to the 

 genus Reptomultisparsa. It differs from this, in addition to the 

 generic characters, by the orifices being more crowded and 

 smaller, and the surface plain. 



10. Berenicea boloniensis (Sauvage), 1889. 



Rosacilla boloniensis, Sauvage, 1889, Bry. Jur. Boulogne, Bull. Soc. geol. 



France, s6r. 3, t. xvii. p. 48, pi. iii. figs. 9-10. 

 Rosacilla corallma, Sauvage (non £tallon), 1889, ibid. p. 47, pi. iii. 



figs. 11-15. 



Diagnosis. — Zoarium irregular sheets. 



Zocecia not visible throughout, slightly fusiform, raised at 

 the extremities, which are crowded together ; front wall 

 punctulate. 



Peristomes raised, owing to crowding of zooecia; fairly regu- 

 larly arranged, generally irregularly quincuncial, in long 

 series. 



Ooecia irregular, wide, extending across four to six zocecia. 



Formula. — 1 0" 1 si. 



Distribution. — Bradford Clay, England. Corallian and 

 Sequanian, near Boulogne ; Sequanian, Bavaria. 



11. Berenicea scobinula (Michelin), 1840. 

 Diastopora scobinula, Michelin, 1840, Icon. Zooph. p. 10, pi. ii. fig. 12. 



