THE PRE-ADAMITE EARTH. 



Adding- two genera of Crustacea), the total number of generic 

 forms in this period hitherto discovered amounts to 125, of which 

 20 were new, and 105 revived. 



427. The outlines of land and sea were similar to those of the 

 last period, except on the borders of the Anglo -Parisian basin 

 between the departments of the Haute-Marne and Pas de Calais 

 in France, which, hithert(f uninvaded by the waters, were now 

 submerged, which shows that the waters had advanced to the 

 north in consequence of a subsidence of the ground in that 

 quarter. The sea also extended to certain parts of the Eastern 

 Pyrenees and the Var not previously submerged. 



On the other hand, certain parts previously submerged were 

 now dry land, as, for example, in the department of Vaucluse and 

 along the line of the Alps from Escragnolles in the Var to 

 Grenoble, all of which were covered by the sea of the previous 

 period. 



428. The seas were inhabited by fishes, Crustacea, and Mollusca, 



Fig. 175. Cyathiua Bowcrbankli. 



of numerous forms previously unknown. One of the Polyparia 

 of this period is shown in figs. 175, 176. 

 108 



