lxxxiv 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



Mineral Condition. 



Physical 

 Formation. 



Mammifera observed. 



Gypsum 



Calcaire de Saint-Ouen 



Fluvio-lacustrine 



Lacustrine ...... 



Fluvio-Marine 



Sables de Beauchamp . . 

 Upper Calcaire Grossier 



Middle and Inferior 

 Calcaire Grossier ... 



Conglomerate of Mont 

 Bernon 



Marine 



Fluvio-Marine 



} 



Marine , 



Upper,orofCuisse 

 Lamotte 



|Fluviatile...« 



'*< 



Lignites 



Plastic Clay 



Conglomerate 

 of the Plastic I 



Clay J 



Inferior, or of Bra- 



cheux 



Limestone and marl 



with Physa gigantea 



White Sands of Rilly- 



la-Montagne 



V Marine . 

 Saltmarsh 



{ 



Fluvio-Marine 



j- Marine 



> Lacustrine 



} 



Fauna very rich ; Anoplotherium, 

 Palaeotherium, &c. the details 

 not given. 



Anchilopus Desmaresti, Gervais, 

 wrongly quoted as from the Cal- 

 caire Grossier. 



Ossiferous conglomerate at the 

 junction of these beds not yet 

 studied. 



None. 



Lophiodon Parisiensis, Gervais; 



Pachynolophus Duvalis, Pomel; 



P. Prevosti, Gervais; 



Dichobune Robertiana, Gervais ; 



D. suilla, Gervais ; 



and others, as yet undetermined. 



None. 



Pachynolophus Vismeei, Pomel. 

 Several species of Lophiodon 

 not yet described ; Carnivores. 



None. 



Coryphodon eocaenus, Owen. 



Paleonictis gigantea, Blainville. 



None. 



Coryphodon Oweni, Heb.; several 

 other Pachyderms and Carni- 

 vores and a Rodent. 



Arctocyon primaevus, Blainville, 



None. 



None. 



Old-established labourers in Palaeontology have not failed to con- 

 tribute their quota towards the advancement of palaeontological 

 science ; for example, Sir Philip Egerton has supplied an interesting- 

 paper on Pish Remains from the neighbourhood of Ludlow, which 

 deserves special attention. He justly states the difficulty of the sub- 

 ject, and observes that little has been discovered, since Agassiz deter- 

 mined the Ichthyic affinities of the Cephalaspid remains in England, 

 to have enabled even that great naturalist to advance a positive 

 opinion as to their true place in the scale of nature. Agassiz, whilst 

 referring two species, namely CeplidlaspisLeivisii and C.Lloydii to the 

 genus which he had originally founded on C. Lyellii, indicated the pos- 

 sibility that they might hereafter become the type of a new genus ; this 

 change has been effected by Dr. E. Kner, who formed the genus Pte- 

 raspis, a genus accepted by Professor Huxley and Mr. Salter, though 

 on different grounds to those on which Kner's determination was made. 

 "With, therefore, every necessary reserve upon so difficult a point, Sir 

 Philip has been able to establish, even from the imperfect materials 

 furnished him, no less than three new species, namely Cephalaspis 



