CONTENTS IX 



CHAPTER XIV 



Class Gasteropoda — Amphineura and Prosobranchiata . . . 400 



CHAPTER XV 



Class Gasteropoda (continued ) : Opisthobranchiata and Pulmonata 427 



CHAPTER XVr 



Classes Scaphopoda and Pelectpoda ....... 444 



BRACHIOPODA (RECENT) 



CHAPTER XVn 



Introduction — Shell — Body — Digestive System — Body Cavity — 

 Circulatory System — Excretory Organs — Muscles — Nervous 

 System — Reproductive System — Embryology — Habits — Dis- 

 tribution — Classification ........ 463 



BRACHIOPODA (FOSSIL) 



CHAPTER XVni 



Introduction — Division I. Ecardines — External Characters — In- 

 ternal Characters — Division H. Testicardines — External 

 Characters — Internal Characters — Synopsis of Families — 

 Stratigraphical Distribution — Phylogeny and Ontogeny . . 491 



