2 
III. Systematic Index = 2231 : — 
General 
Amphineura . . 
Gastropoda 
Prosobranchia 
Heteropoda 
Opisthobranchia .. 
Pteropoda 
Pulmonata . . 
Scaphopoda . . 
Laraellibranchia 
Cephalopoda . . 
PAGE 
.. 60 
.. 60 
.. 62 
.. 62 
.. 114 
.. 114 
.. 121 
.. 121 
.. 146 
.. 147 
.. 175 
