Zoological Characters in Geology. 



257 



Cerithium . 



.< 



Inoceramus concentricusPark.(p!. vi. 



sulcatus Park. (pi. vi. fig. 12.) 



Two species. They are 

 broken, but are easily 

 determined to be true 

 cerithia; one of them so 

 much resembles cerithi- 

 um mutabile of Beau- 

 champ, near Paris, that 

 I cannot, at present, see 

 any difference between 

 ^them. 



, J N (From Folkstone, Rouen, 

 ■■'• ^andthePerteduRhdne. 



Cytherea ? . . . 



Cardium .' 



Pectunculus ? . 

 Area 



Terebratula omithocephala.* . .Sow. 



plicatilis Sow. 



obliqua ? Sow. 



Echinus 



CFrom Folkstone and the 



\ Perte du Rhone. 



Casts absolutely unde- 

 terminable, even for the 



, genus, except those of 



^ the area, which very 

 much resemble the inte- 

 _rior casts of area Noe. 



f (Coll. of Deluc.) From 



-<the mountain of the Re- 



^posoir. 



5 Altogether resembling 

 ^that found in the chalk. 



Spatangus Cor anguinum 



Nucleolites? Rotula . .A. Br. (pi. ix. 



castanea A.Br. (pi. ix. 



fig. 13.) 

 fig. 14.) 

 Galerites ? depressus . . Lam. (pi. ix. fig. 14.) + 



f Oval, resembling ma- 

 •<millaris, but are much 

 ^smaller. 



C From all the chalk for- 

 f,mations. 



The echinites are very 

 abundant, but all in a 

 bad state. 



* There appears to be some error here in the text, for three terebra- 

 tulae are given in the hst. Parkinson, in his table of British fossil shells 

 above referred to, gives, out of thirty-one species of fossil terebratulae, 

 six as found in the green sand, viz. : T. biplicata, T. intermedia, T. di- 

 midiata, T. ovata, T. pectita, and T. Lyra. The terebratulce mentioned 

 as occurring in the chalk and chalk marl, are, T. biplicata, T. subro- 

 tunda, T. carnea, T. semiglobosa, T. subundata, T. plicatilis, T. octo- 

 plicata, and T. obliqua. To this list should be added some others enu- 

 merated by Mr. Mantell, in his Geology of Sussex, viz. T. sulcata, T. 

 Martini, T. striatula, T. squamosa, and T. subplicata. (Trans.) 



+ In order to compare this and the other lists with the fossils con- 

 tained in the chalk and green sand of England, consult Conybeare and 

 Phillips's Outlines, &c. p. 73, 74, 75, 76, 129, 130,— Parkinson's Table' 

 of British fossil shells, (Introduction to the study of Organic remains 

 p. 231, &c.), and Mantell's Geology of Sussex. (Trans.) 



H 



