xii 



CONTENTS. 





Page 



Family X\a. — Naticacea - 



- Ill 



Natica - - - - 



- Ill 



Cernina - - - - 



- 112 



Deshaysia - 



- 112 



Sigaretus - 



112 



Amaura - 



113 



Laguncula - 



1 13 



Family XVII. — Velutinacea - 



- 113 



Velutina - 



113 



Trichotropis 



1 14 



Calcarella - 



- 115 



Family XVIII. — Naricacea - - - 



Tic 



Narica - 



- 115 



Neritopsis - 



- 116 



Family XIX. — Xenophoracea - 



- 116 



Xenophora - 



- 116 



Family XX. — Culyptrceaceci - 



- 118 



Dispotaea - 



- 118 



Crucibulum - 



- 118 



Mitrularia - 



- 118 



Trochita - 



- 119 



Galerus - 



- 120 



Crepidula - 



- 120 



Capulus - 



- 121 



Brochia - - - - 



TOO 

 ill 



Spiracella - 



123 



Pedicularia - 



- 123 



Family XXI. — Binyicidacea - 



- 123 



Ringicula - 



- 124 



Cinulia - - - - 



- 124 



Tylostoma - - - - 



- 124 



Globiconc ha ■ 



125 



Family XXII. — Pyramidellacea 



- 125 



Py ramidclla - 



125 



Odontostoma - - - - 



- 126 



Monoptygma - 



- 126 



Turbonilla - 



- 126 



Nerinea - 



- 127 



