175 



This formation is well characterized and extended, but is not 

 always found between the "calcaire a Entroques" and the 

 "calcaires a Terebratula PhilUpsii," for like all true reef-like 

 structures it is an inconstant member of a stratified series. 

 The following may be considered to be the leading fossUs of 

 this bed : — 



Cephalopoda. 

 Ammonites Sauzei, cCOrh, 



CONCHIPEEA. 

 Pinna inomata, Fer. Pecten articulatus, Goldf. 



Lithopliaga Waterkeyni, Chap. Ostrea subcrenata, d'Orh. 



Lima semicirciilaris, Goldf. 



Beachiopoda. 



Ehynchonella quadriplicata, d' Orh. Ehynchonella parvula, Desl. 

 II costata Thecidea triangularis, d' Orh. 



Polyzoa. 

 Stromatopora dichotomoides ? Haime. Heteropora pustulosa, Haime. 

 Berenicea Archiaci. Haime. 



EcHINODERMATA. 

 Cidaris Courtandina, Cott. Pygaster semisulcatus, Phill. 



Anthozoa. 



Thecosmilia ramosa, d'Orh. Latomeandra decipiens, Fer. 



CladophylliaBabeauana^dti;.(fe5ai77je. " 'E\cmui^,Edw.& Haime. 



Favia Fromenteli, Fer. Tliamnastr8eacrenulata,^cZit;. (fefi^aiVne. 



Confusastrsea omata, (^e i'^rom. - 'Ketie.ia.ses,Edw.& Haime. 



II consobrina, d'Orb. " 'Deiia,neeana,,Ed.&Haim£. 



Isastrsea Bemardana, Edw. & Haime. " major, Fer. 



II variabilis, Fer. Centrastrsea Mc. Coyi, Edio. & Haime. 



II Lamartine, Fer. Goniocora prima, de From. 



II multistriata, Fer. Microsolena dendroidea, Fer. 



Calcaires a Terebratula PMlUpsii. — Pine sandy marls cover up 

 the surface of the ancient coral reefs, and these are succeeded 

 by calcareous beds composed of the debris of crinoids, the plates 

 O 



