22 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [jS"0V. 21, 



and present a distinction, both in species and genera, from those 

 considered characteristic of the superimposed beds containing Gry- 

 phoea incurva, &c. 



In the Brocastle conglomerate, and in the Southerndown and Sut- 

 ton series, the lithological distinctions and specific resemblances of the 

 French and Luxembonrgian series are observable. The number of 

 species common to all may be well seen in the following table : — 



Table of the Distribution of the Species. 



pH 





fe 





o 





^ 



^ 











^ 



cS 







Ji 



o 







U} 



pq 



^^ 





to K 





^ 





3^ 



Septastrsea excavata de From 



MontUvaltia polymorplia, Terq. . , . 



pedunculata, Dime 



Isastraea Sinemuriensis 



Tkecosmilia Martini, de From. . . . 



Michelini. 



Astroceenia gibbosa, Dune 



Cerithium acuticostatum, Terq. ... 



gratum, Terq 



Semele, d' Orb 



Turritella Dunkeri, Dun/c, sp. ... 



Zenkeni, Dicnk., sp 



Littorina clathrata, Desk 



Phasianella Morencyana, Piette . . . 



Neritopsis exigua, Terq 



G-ervilha acuminata, Terq 



Ostrsea irregularis, Milnstcr (O 



liassica, Strickland) 



mnlticostata, Munst 



anomala, Terq 



Lima tuberculatata, Terq 



CacullDea Hettangiensis, Ter^-. .., 



Cardita Heberti, Terq , 



Lima exaltata, Terq , 



dentata, Terq , 



Cardinia regularis, Terq 



Plicatula intusstriata, Emm , 



Myophoria postera, Quenst 



Monotis decussata, Milnst 



Cardinia concinna...,.- 



The Madreporaria, scanty in the lower strata of all the Liassic de- 

 posits immediately above the Trias, become more common in the beds 

 just below the Gryphsea-limestone. This is a feature in Great Britain 

 as well as elsewhere ; and the coral-fauna of Sutton and Brocastle con- 

 tains species in common with that of the Foie de Yeau, the zone of 



t Coted'Or. 



