LIST OF ILLUSTRATIONS IN VOL. X. 



Portrait of Lieut.-Colonel H. H. God win- Austen, F.R.S., President 



1898-9. (Frontispiece.) 

 Anatomy of species of Gultellus and Azor. (Plate I.) 

 Eulota {Gatludca) Orestias, n.sp. 



„ {Plectotropis) Wardi, n.sp. 

 Buliminus castaneo-balteatus, n.sp. 



„ ordinarius, n.sp. 



,, oscitans, n.sp. . 



„ Wardi, n.sp. 



„ {Serinus) sohvinus, n.sp. 



„ {Napceus) Coolcei, n.sp. 



Clausilia Cookei, n.sp. 

 Helicarion Coxi, n.sp. 



,, Knysnaensis, n.sp. 



I^atalina liliaeea, n.sp. 

 Zingis perlevis, n.sp. . 

 Trachycystis Knysnaensis, n.sp. 



„ microstriata, n.s}). 



,, Coxi, n.sp. 



Ambages tiharmani, n.g. et n.sp. 

 Neocyclotus Peilei, n.sp. 

 Sistrum Oparense, n.sp. 

 Tridacna acuticostata, n.s}). 

 Some British Non-marine Mollusca. (Plate II 

 Clionella tripartita (Weinkauft") 

 Eocene Gastropoda from the Fayum Province of Egypt. (Plates III 



and IV.) .... 

 Hydrobia Adamsi, n.sp. 

 Planorbis levistriatiis, n.sp. 



„ Uruguayensis, n.sp. 

 Limicolaria Alhiensis, n.sp. 



„ Nakuruana, n.sp. . 



„ iVyiroensis, n.sp. 



„ {liebmanniella) percwta, n.sp. 



„ „ perobtusa, n.sp 



Sub-species of Anodonta cygnea from Western North America 



(Plate V.) . . . ' . 

 New species of freshwater shells from Western North America 



(Plate VI.) .... 



10 

 11 

 11 

 12 

 12 

 13 

 13 

 14 

 14 

 15 

 Ifi 

 16 

 17 

 17 

 17 

 18 

 IS 

 22 

 22 

 27 

 31 

 43 

 54 



80, 82 

 107 

 107 

 107 

 108 

 109 

 109 

 110 

 111 



125 



127 



