Beeenicea. ZOOPHYTA. ESCHARADiE. 533 



an inch ; the surface is rough with the long stout spinous processes ; it is 

 brittle, light, and usually of a white colour. 



EXTINCT SPECIES. 



1. C. Urii Branched, round, about a quarter of an inch in diameter, 



form round Millepore, Ure, Ruth. 228, t. xx. f. 1. 



Gen. LIII. BERENICEA.--Cells united in a spot-like crust, 

 adhering throughout, and not circumscribed ; mouth at 

 the distal extremity of the cells. 



132. B. coccinea. — Cells subcylindrical, adjacent, in diverg- 

 ingly bifid rows ; mouth wide, a single blunt tooth on the outer 

 margin, and two or three spines on the inner. 



Cellepora coc. Mull. Zool. t. clxvi. f. 1, 2 Discopora bispinosa, John- 

 ston, Edin. Phil. Journ. xiii. 222. — On the under side of stones near 

 low water-mark. 

 Occurring in circular patches upwards of an inch ; towards the centre it 

 is commonly rough with the ovaria ; the surface of the cells looks as if frosted, 

 though glossy. 



133. B. hyalina. — Diaphanous, the cells forming an even, 

 smooth crust, with tubular simple mouths. 



Cellepora hyal. Linn. Syst. i. 1286. — On stones, shells, and corallines 

 from deep water. 



The crust is semitransparent, the divisions of the narrow cells indicated by 

 whitish lines, and the orifices are narrow, cylindrical, simple tubes. The 

 crust is not circumscribed, otherwise it resembles the genus Discopora. 



134. B. immersa. — Cells forming an even, rough crust ; the 

 mouths declining, small, with a blunt tooth on the proximal 

 margin. 



On shells and corallines from deep water. 

 Crust rather thick, of a brownish colour ; the divisions of the cells indis- 

 tinct, the cells themselves being only a little elevated towards the aperture ; 

 the whole surface minutely granular. 



135. B. 7itriculata. — Cells bladder-shaped, sitting, aperture 

 with five or six teeth, the proximal one the largest. 



On stones and shells from deep water. 

 The cells appear as unconnected, though adjacent, raised, rounded, the 

 mouth scarcely terminal, restricted, contracted, and slightly prominent. 



136. B. nitida. — Cells subcylindrical, prominent, and trans- 

 versely ridged. 



Cellepora nit. Fab. Faun. Gr. 435. — On shells, rare. 

 Cells contiguous, the mouth terminal, transverse, simple. 



EXTINCT SPECIES. 



1. B. diluviana — Cells pyriform, openings large. — Lamour. 2ooph. 81. 

 t. Ixxx. f. 1. Geol. of Eng. 214 — In Oolite. 



