302 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 19, 



Table VII. (continued). 



Names of species. Observations. 



37. Typhis cuniculosus, Mr. Morris thinks this shell is probably a var. 



Nyst. of T. muticus, Sow. 



T. muticus. Sow.? 



38. Triton argutum. The Barton shell is a slight variety of this 



Brander. shell, but a variety from Highgate agrees 



T.Jlandricum,'DeK.on. with it. 



39. Rostellaria (Chaeno- Agrees with the London Clay species, but 

 pus) Sowerbyi, Mant. larger in average size. 



ChcenopusMargerini, 

 De Kon. 



40. Cassidaria (Morio) de- 



pressa, V. Buck. 



41. — calanthica, F. Buck. A rare species which I was unable to obtain. 



42. Voluta semiplicata, 



Nyst. 



43. Nautilus ziczac. Sow. De Koninck's figure agrees well with the Lon- 

 Aturia ziczac, Bronn. don Clay shell. Only one individual ever 



found. 



Several species of Entomostraca have also been met with in the 

 Rupelmonde clay, and described by M. Bosquet*. 



I obtained at Rupelmonde, Boom, and Schelle many Sharks* 

 teeth, some belonging apparently to Carcharodon heterodon, Ag. of 

 very large size. The following list comprises twelve species which 

 I have in my collection. 



Fossil Fish from Uupelmonde, Boom, and Schelle. 



1. Carcharodon hetero- One of the late Mr. Dixon's specimens from 

 don ?, Ag. Bracklesham, now in the British Museum, 



agrees more closely than fig. 11-16, pi. 28, 

 of Agassiz's ' Poiss. Foss.' 



2. angustidens, Ag. 



3. Oxyrhina xiphodon, Ag. 



4. trigonodon, Ag. 



5. Desorii 1, Ag. 



6. Otodus obliquus, Ag. 



7. Lamna elegans, Ag. 



8. cuspidata?, Ag. 



9. compressa ?, Ag. 



10. Hopei, Ag. 



11. Galeocerdo minor, ^^r. 



12. Notidanus primige- 



nius, Ag. 



Of the 43 species of MoUusca above enumerated, no less than fifteen 

 are supposed to be species found in English Eocene strata, viz. 

 Nos. 1, 2?, 4, 6, 7?, 18, 19, 20, 22 ?, 29 ?, 30, 37, 38, 39, 43. It 

 will be seen that four of these are given doubtfully, but, on the other 

 hand, it is remarkable that several others, which are stated to be 



* Mem. Couronn. de TAcad. Roy. de Belgique, torn. xxiv. 



