256 M.BROVCTm ART on the ■- 



casts in the cavities of the shells, which have been almost 

 always destroyed. These relievos are moreover ill shaped, 

 entangled within each other, or joined together ; yet they 

 are sufiBciently well preserved to determine with certainty 

 the genera and species contained in the following list j 



Organic remains of the upper and uncovered beds of the 

 rocks and mountains of Fis, Sales, &c. forming part of the 

 Buet chain in the Savoy Alps. 



f" This is known to be 

 I a genus of shells, the 



Nautilus -i greater part of the fos- 



I sil species of which be- 

 (_long to the chalk.* 



Scaphites obliquus. . . . Sow In the chalk of Rouen. 



Ammonites varians . . . Sow In the chalk of Rouen. 



Deluci A. Br. (pi. vi. fig. 4.) . S ^""^^ 



clavatus Deluc. (pi. vi. fig. 14.) . . Coll. of Deluc. 



_., . .„ /i--co\ < In the chalk fgreensand) 

 Beudant, A.Br. (pi. vn. fig. 2.) J of the Pertedu Rhone' 



Selliguinus A. Br. (pi. vii. fig. 1.) . 



Hamites virgulatus . . . A. Ar. (pi. vii. fig. 6.) . 



funatus A. Br. (pi. vii. fig. 7.) . 



Turrilites Bergeri A. Br. (pi. vii. fig. 4.) . 



? Babeli A. Br. (pi. ix. fig. 16.). 



f" An undeterminable cast 

 _, , 3 "'"'• altogether resemb- 



*"''^'*"* • ••'■ i ling that which has been 



(_ named Tr. Gurgitis. 



f From the chalk (green- 

 Cassis avellana A. Br. (pi. vi. fig. 10.) < sand .') of Rouen arid the 



C Perte du Rhone. 



AmpuUaria Interior cast. 



* Out of the nineteen species of nautili mentioned by Parkinson in his 

 table of British fossil shells, (Introduction to the study of Fossil organic 

 remains, (1822,) p. 231 & 232,) only five are from the green sand and 

 chalk, so that it by no means appears that the greater part of the fossil 

 species are found in the chalk, even when united to the greensand. (Trans.) 



In the chalk (greensand) 



inflatus Sow -J of Rouen, and in that of 



the Perte du Rhone. 



the chalk of the Perte 

 Rhone. 



