6 MM. Cuvier and Brongniart on 



Ovidites Margaritula . Lam''., pi. Ixxi. fig. 9, 10. 



Alveolites Milium . . . Bosc, Bull, des Sc. No. 61. pi. v. fig. 3. 



Tuiritclla imbricata. 



Terehcllum convolutum . 



Calyptra;a trochiformis. 



Peduncidus jndvinatm. 



Cithenea nitidula. 



— elegans. 



Miliolites These are extremely abundant. 



pThere may be some species ; but we 

 I do not find C. lapidum, C. petri- 



Cerithium ? \ colum, &c., or C. cinctum, C. pli- 



I catum, &c. The latter belong to 

 \^ the second marine formation. 

 The number of the species of fossil shells found in these 



two first systems amounts to nearly six hundred. They have 



nearly all been collected by M. Defrance and by us, and have 



been described by M. de Lamarck. 



Third System. 

 Upper Beds. 

 The species contained in these beds are much less numerous 

 than those found in the middle beds. 



Miliolites These are here more rare. 



Cardium Lima or ohliquum. 



Lucina saxorum. 



Ampidlaria spirata, &c. 



Cerithium tuberculatum . "^ ^^^^ ^^^^^^.j^ ^^^ ^,^^ ^^j^^^. Cerilhia, 



• mutabile • • • I ^ith the exception of C. simn- 



i^P'^!'^, • • • j teum. ^ 



petricolum . . J 



Corbula anatina? 



■ striata. 



Fossil Vegetables of the Calcaire Grossier. 



Endogenites echinatus . . . Ad. B. . . . Environs of Soissons. 



Cidmites nodosus Ad. B. . . . Montrouge. 



avibiguus .... Ad. B. . . . Grignon. 



Phyllites (many species) . . . Montrouge, &c. 



Flabellites Parisiensis . . Ad. B. . . . St. Nom. 



Pinus Dejrancii Ad. B. . . . Bagneux. 



Equisetum brachyodon . . Ad. B. . . . Montrouge. 



Beds of sandstone and masses of chert, full of marine shells, 

 are found among the strata of the second and third systems. 

 The limestone beds are even, in some places, entirely replaced 

 by this sandstone, which is sometimes friable and of an opaque 



whitish 



