PROM THE ZONE OF AMMONITES ANGULATUS. 33 



The remarkable Thecosmilia rugosa, Hhahdophyllia recondita, and Mysastraa FiscJieri, 

 from the lower part of the Sutton Stone, have been described and drawn by Laube from 

 the St. Cassian beds of the Trias. The fauna with which they are associated in the Trias 

 has not been described ; but the presence of the species in the Angulatus-Zone of the 

 Lower Lias or the Lifra-Lias is very interesting. 



The species described by Terquem and Piette, E. deEromentel, and D'Orbigny, viz. — 



Isastrtea Sinemuriensis, E. de From., 

 Septastrcea excavata, E. de From., 

 MontlivaUia polymorpha, Terquem et Piette, 

 Astrocoenia Sinemuriensis, D'Orb., sp., 

 Thecosmilia Martini, E. de From., 



„ MicJielini, Terquem et Piette, 



are associated in the Continental Liassic strata with many of the species of Mollusca which 

 are noticed in the Sutton Stone and in the deposits at Brocastle in Glamorganshire. 



In the Lumachello of the upper series of the Infra-Lias of Normandy^ (the Calcaire de 

 Valogne) Septastroea excavata is found to be associated with the following species, found 

 also with it in the Glamorganshire Lias, which rests on Carboniferous Limestone: 



Cerithium acuticostatum, Terquem. 

 Turritella Dunkeri, Terquem. 



„ Zenlceni, Danker, sp. 

 Phasianella Morencyana, Piette. 

 Ostrea anomala, Terquem. 

 Cardinia regularis, Terquem. 



At Vic de Chassenay 3 Thecosmilia Martini, E. de From., and Astroccenia Sinemuriensis, 

 D'Orb., sp., are associated with — 



Ammonites Moreanus, D'Orb. 

 Littorina clathrata, Desh. 

 Cerithium Semele, D'Orb. 



„ gratum, Terquem. . 



„ acuticostatum, Terquem. 



The middle bed of the Gres calcareux described by Terquem (' Pal. de Hettange,' 



1 Deslongchamps, 'Mem. Soc. Linn^enne de Normandie,' vol. xiv, 1804. 



2 Martin, 'Pal. Strat. de I'lnfra-Lias,' &c., 1860. 



