iv SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 1 28 



Page 



Platyhelminthes 123 



Class Turbellaria 123 



Class Cestoda 124 



Nematoda 124 



Nemertea 125 



Sipunculoidea 126 



Priapuloidea 126 



Echiuroidea 127 



Chaetognatha 128 



Brachiopoda 129 



Bryozoa 129 



Entoprocta I33 



Annelida I34 



Class Chaetopoda I34 



Class Hirudinea I44 



Echinodermata I44 



Class Asteroidea I45 



Class Ophiuroidea 145 



Class Echinoidea 146 



Class Holothuroidea 146 



Arthropoda I47 



Class Crustacea I47 



Class Arachnoidea 170 



Mollusca 171 



Class Pelecypoda ^72 



Class Gastropoda I75 



Class Amphineura I79 



Class Cephalopoda I79 



Enteropneusta 180 



Tunicata 180 



Class Ascidiacea 180 



Vertebrata 183 



Class Pisces 183 



Class Mammalia 185 



Discussion 187 



Acknowledgments I93 



Selected bibliography I94 



