Conclivlioiogie fluvialile .' Ninq-kûiao 



chynoLoci 



3- 



PL. LXl. 



119 



120 



Arnoul litli 



ïmp.Becquet "frères ; Paris . 



119. Unio sulitortus, Baird and Adains 



120. U ZOTiatuS,Heude . 



