APPENDIX. 
511 
Dr. Thomson’s Collection conmied of — 
Shells. Habitat. 
Achatina . 
. Niger. 
Area 
. Bonavista. 
Cerithium 
. ditto. 
Bulimus . 
, Niger. 
Purpura . 
. Fernando Po. 
Lymnea . 
. Do. River. 
Neritina . 
. ditto. 
Spirula 
. Cameroons. 
Potamis . 
ditto. 
Area 
, ditto. 
Murex 
. ditto. 
Purpura . 
. ditto. 
Shells. Habitat. 
Cinthia . 
. Cameroons. 
Helix 
. Teneriffe. 
Patella 
. Cameroons. 
Persica . 
. ditto. 
Pyramidella 
, ditto. 
Littorina . 
ditto. 
Troclms . 
. ditto. 
Cyprsea , 
. ditto. 
Lepas 
ditto. 
Voluta 
. ditto. 
Turbo 
. ditto. 
Conus 
. ditto. 
We regret to state that several cases of Insects^ collected in 
the Nigei% Fernando Po, Bimbia; have been mislaid^ and, 
we fear, lost. 
THE END. 
