Freslt-water Formation.^ of Ahr, in Provence. 29T 



vations were written, containing many totally different species, 

 I hope at some future period to have the pleasure of resuming 

 the subject ; and I was happy to find, that the remarks I had 

 ventured to make at the commencement of this notice were ra- 

 ther strengthened by this valuable addition to their collection. 



List of Fossil Shells in the Fresh-water Formations of Aix and Fuveau, 

 in Provence. The new species of Shells named and figured by 

 J. De C. Sowerby, Esq. F. L. S. 



BIVALVES. LOCALITIES. 



1. Potamides Lamarctcii, .... Escarpment N. of Aix. 



2 (Cerittiium gr. of Hesha-yes), Do. do. 



1. Bulimus terebra, ..... Do. do. 



2 pygmceus, Porte Bellegarde, Aix. 



1. Neritina (cast of), .... Do. do. 



\. LymiKBus ovum, S. side of the river Arc, Aix. 



2 new species (whorls reversed, \ „ , 



Physaf), J "■ °* 



y.Plan,>rlisrotundaius, .... f l„f Jl^^ "^' """" 



2 new species, somewhat resembling 



P. rotundatus. 

 1. Melarda scalaris (new species, Sowerby), Coal, Fuveau. 



2 new species, striated, too imperfect! 



to be figured, .....'' 



UNIVALVES. 



1. Cycto^iJiosa, new species, Sowerby, . . Escarpment N. of Aix. 



2. agtuE-sextuB, do. do. Sowerby (very large), Porte Bellegarde, Aix. 



3 concinna, do. do. Sowerby, . . Roof of coal, Fuveau. 



4 cuneata, do. do. Sowerby, . . / High above the coal, Fu- 



•" ( veau. 



1. Unio, a new and very large species, . Roof of coal, Fuveau. 



Cypris, (new species, Sowerby), . . Escarpment N. of Aix. 



Cyclas gibbosa. Cyclas aquse-sextis. Cyclas concinna. Cyclas cuneata. Melania scalaris. 



