TABLE OF CONTENTS 
THE SHELL GALLEEY. 
General Notes on Mollusca 
Systematic Arrangement 
Amphineura (Chitons, etc.) 
Gastropoda (Marine Univalves, Land Snails, etc.) 
Lamellibranchia (Bivalves, Oysters, Cockles, etc.) 
Cephalopoda (Octopus, Cuttlefish, etc.) 
Index to principal Genera of Mollusca 
General Notes on Polyzoa . 
Classification. 
An account of the Brachiopoda 
Classification 
An account of the Tunicata 
Arrangement 
PAGE 
1 
i 
9 
29 
45 
51 
54 
57 
74 
77 
83 
90 
THE STAEFISH GALLERY. 
General account of the Echinoderma. . . . 100 
Crinoidea (Lily Stars, etc.) 112 
Asteroidea (Starfishes) 113 
Ophiuroidea (Brittle-Stars) 114 
Echinoidea (Sea-Urchins) 114 
Holothurioidea (Sea-Cucumbers) . . . . .115 
{Platyhelminthes (Tapeworms, etc.) . . .116 
Nematodes (Roundworms, etc.) . . . .118 
Annulata (Marine Worms, Earthworms, Leeches) . 122 
