Ectoprocta 
Pelecypoda 
Gastropoda 
Cephalopoda 
Ascidiacea 
Asteroidea 
Echinoidea 
Holothurioidea 
Hydrozoa 
Anthozoa 
CONTENTS 
CHAPTER IV 
BRYOZOA (POLYZOA) 
BucuLa 
CHAPTER V 
MOLLUSCA 
A FrrEsHWATER MussEL 
AN OYSTER 
A Harp-SHeLL CLAM 
A Lanp SNAIL . 
A Squip 
CHAPTER VI 
TUNICATA 
A Simp.te AscipIAN . 
CHAPTER VII 
ECHINODERMATA 
A STARFISH 
A Sea UrcHIN 
A HoLoTaurian 
CHAPTER VIII 
CNIDARIA 
Hypra . 
A TuBULARIAN HypROMEDUSAN. 
A CAMPANULARIAN HypRoMEDUSAN 
GONIONEMUS . 
A Sea ANEMONE 
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