CONTENTS. IX 



PAGE 



1 1. Papiia and New Ireland 103 



12. Australian Eegion 103 



13. Sontli Australia and Tasmania lOi 



14. New Zealand 104 



15. Polynesian Eegion : Salomons, New Hebrides, New 



Caledonia, Feejees ; Friendly, Navigator's, Society 

 Islands; Low Coral Islands; Sandwich Islands 104 



16. Canadian Regions : New England 106 



17. Atlantic States 107 



18. American Region 108 



19. Oregon and California 109 



20. Mexican Region 109 



21. Antilles ' 110 



22. Columbian Region : Gralapagos Ill 



23. Brazilian Eegion 112 



24. Peruvian Region 113 



25. Argentine Region -. 114 



26. Chilian Region : Juan Fernandez 114 



27. Patagonian Region : Fuegia, Falklands 115 



CHAPTER III. 



Distribution of the Mollusca in Time. — Geological Table ; 

 distribution of Species in the Strata ; of Genera ; table of 

 Characteristic genera ; table showing range of genera ; range 

 of families ; numerical development in time. — Order of appear- 

 ance of groups of shells ; order of succession. — Migration of 

 species and diffusion of Genera in former times. — Method of 

 Geological investigation. — Tertiary Age. — Secondary Age. — 

 PalsBozoic Age. — Numerical estimate : living and foSsil 

 species 117 



CHAPTER lY. 



On Collecting Shells. — Land-shells ; elevation on mountains. 

 — Fresh- water shells.— Sea-shells, littoral species ; floating 

 mollusca : the towing-net ; trawling ; kettle-nets ; deep-sea 

 fishery ; trapping whelks ; dredging 13S 



Dredging papers, by M'Andrew and Barrett, Norway 144 



Dredging papers, by Forbes, vEgean 148 



Zones of depth : littoral ; laminarian ; coralline ; deep-sea coral 



zone 151 



Preservation of Molluscous animaJs for examination , . 153 



