Moll 1 
VII. MOLLUSCA. 
BY 
E. R. Sykes, B.A. 
Assisted by E. A. Smith, I.S.O. 
CONTENTS. 
Introduction 
I. Titles 
Obituary Notices, &c. . 
II. Biology. 
Anatomy, Physiology, &c. . 
Distribution. 
Geographical. 
Non-Marine 
Marine 
Geological 
III. Systematic. 
Cephalopoda 
Dibranchiata .• . . . . 
Ammonea 
Tetrabranchiata .... 
Gastropoda 
Pulmonata 
Stylommatophora. . . 
Basommatophora . . . 
Page 
Page 
2 
Opisthobranchiata . . . 
64 
4 
Nudibranchiata . . . 
64 
33 
Tectibranchiata (includ- 
ing Pteropoda) . . . 
64 
Nucleobranchiata . . . 
65 
33 
Prosobranchiata . . . . 
65 
Pectinibranchiata . . . 
65 
37 
Scutibranchiata . . . 
76 
43 
Scaphopoda 
79 
47 
Pelecypoda 
79 
Septibranchiata . . . . 
79 
53 
Eulamellibranchiata . . 
80 
53 
Pseudolamellibranchiata . 
83 
54 
Filibranchiata 
84 
55 
55 
Protobranchiata . . . . 
84 
55 
Amphineura 
84 
55 
Aplacophora 
84 
63 
Polyplacophora . . . . 
85 
D 1 
1903. [Vol. xl.] 
