1898] ALBIAN AND CENOMANIAN IN FRANCE 199 
Lower GAULT. CENOMANIAN. 
Solariwm dentatum, d’Orb. x 2 
Anomia sp. 
Areca carinata, Sow, D4 x 
»» glabra, Sow. x x 
Cardita tenuicosta, Sow. x x 
Corbula elegans, Sow. ; 
»  socialis, d’Orb. x 
Lima parallela, Sow. x 
TInoceramus concentricus, Sow. x 
sulcatus, Sow. 
Nucula ovata, Sow. x 
»  pectinata, Sow. x ba 
Ostrea arduennensis, d’Orb. x 
Pecten raulinianus, VOrb. 
Plicatula pectinordes, Sow. x x 
Terebratula biplicata, Sow. x 
Serpula articulata, Sow. 
Cidaris gaultina, Forbes. 
27 Tor 8 
In the above list there are 38 named species, and of these no 
fewer than 27 occur in the Lower Gault of the same place, which 
is in the proportion of 71 per cent., while only 7 or 8 (about 20 per 
cent.) range into the Cenomanian beds above. D’Orbigny, it therefore 
appears, was perfectly right in classing the Upper Gault as Albian 
and there is no necessity for revising the lists of the Albian fossils 
given by him in his “ Prodrome.” It is Messrs Barrois and Dollfus 
who have made a mistake by classing the Upper Gault as Ceno- 
manian without a sufficient study of its fauna. 
Turning now to England, let us choose localities which corre- 
spond most nearly with Wissant and with |’Argonne ; it is generally 
admitted that the Gault of Folkestone is an expansion of that of 
Wissant, and it will not be denied that the Gaize of Devizes 
resembles that of Argonne. 
I have made a list of the fossils of the Upper Gault of 
Folkestone, basing it on that of Mr Price (Quart. Journ. Geol. Soc., 
Lond., 1874) supplemented by his later record in 1879. Selecting 
the Mollusca and neglecting other fossils, I find that the Upper 
Gault has yielded 103 named species; of this number 54 occur 
also in the Lower Gault, while only 29 range upward into the 
Chloritic Marl and Lower Chalk (Cenomanian) of Kent. Here, 
therefore, the zone in question has a much more decided affinity 
with the beds below than with those above. 
Passing to the Gaize of Devizes my lists are not quite complete, 
but they include 92 species of Mollusca, and no less than 44 of 
these do not. range out of the zone of Am. rostratus (or inflatus), but 
36 occur in the Lower Gault of Wiltshire and Folkestone, while 
only 18 range into the Warminster sand, and 20 into the Lower 
