Moll . 1 
VII. MOLLUSCA. 
BY 
E. R. Sykes, B.A. 
Assisted by E. A. Smith. 
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 
1 
4 
34 
34 
39 
46 
50 
56 
56 
57 
58 
58 
58 
58 
67 
Page 
Opisthobranchiata . . 
. 68 
Nudibranchiata . . 
. 68 
Tectibranchiata . . 
. 68 
Nucleobranchiata . . 
. 69 
Prosobranchiata . . . 
. 69 
Pectinibranchiata. . 
. 69 
Scutibranchiata . . 
. 77 
Scaphopoda . 
. 79 
Pelecypoda. 
. 80 
Septibranchiata . . . 
. 80 
Eulamellibranchiata 
. 80 
Pseudol amellibran chiata 
. 83 
Filibranchiata. . . . 
. 84 
Protobranchiata . . . 
. 84 
Amphineura. 
. 85 
Aplacophora .... 
. 85 
Polyplacophora . . . 
. 85 
INTRODUCTION. 
Judging from the number of titles given, a slight falling off in the amount 
of papers published in 1902 would appear to exist, but this may very 
probably be due in reality to the fact that the work has been completed at 
an earlier date than in past years, and also be affected by the omission of 
a few papers which appeared to be rather of geological than palaeontological 
interest. 
1902. [Vol. xxxix.] d 1 
