CONTENTS. 



Page 

 Introductory Chapter .... 9 



Class MoLLuscA 14 



Order Heteropoda 15 



The Glassy Cariuaria .... 15 



Order Cephalopoda .,., 16 



The Cuttle- Fish 17 



Argonaut 20 



Pearly Nautilus .... 22 



Order Trachelipoda .... 26 



The Marble Cone 27 



Porphyry Olive Shell 28 



]Money Cowrie 29 



Diadem Whorl Shell 31 

 Common Columbella 31 

 Music Harp Shell.... 32 

 Wide-Mouthed Pur- 

 pura 33 



Spotted Scorpion Shell 37 

 Variegated Sea-Trum- 

 pet 39 



CaniculatedPear Shell 40 

 Babylonian Split- 

 Mouth 40 



Marble Turban Shell 41 

 Imperial Top Shell . . 41 

 Precious Scalaria .... 42 



Iris Ear Shell 43 



Dusty Neritina 44 



Viviparous Faludina 44 

 Lymnaea Stagnalis . . 45 

 Horn-shaped Planorbis 46 

 Red-mouthed Bulimus 46 

 Mummy Puppet Shell 47 

 Wood Snail 47 



Page 

 Order Gasteropoda .... 51 



The Red Slug 51 



Woodlike Bulla .... 53 

 Nail-shaped Crepi- 



dula 54 



Mediterranean Um- 

 brella 54 



Clouded Fissurella . . 54 

 Hungarian Bonnet 



Shell 55 



Scaly Chiton 56 



Class CONCIIIFERA 57 



Order Unimusculosa .... 64 



The Horse-Foot Bowl 



Shell 64 



Oyster 65 



Great Comb Shell . . 68 



Pearl Oyster 69 



Hammer Oyster .... 77 



Rough Pinna 77 



Common Mussel .... 79 

 Giant Tridacna 81 



Order Bimusculosa 82 



The Fresh- Water Mussel 83 

 Heart-shaped Isocar- 



dia 84 



Wedge-shaped Donax 85 



Sheath Solen 85 



Date-shaped Pholas. . 87 

 Ship Worm 89 



Class CiRRHIPEDA 91 



Order CiRRHiPEDA Pedun- 



CULATA 92 



The Smooth Barnacle .... 92 



