CONTENTS 



SECTION VII 



Phylum Echinodermata 

 Class i. The Asteroidea 



Example of the Class — Asterias vulgaris 

 Class 2. The Ophiuroidea 



Example of the Class — Ophioglypha lacertosa 

 Class 3. The Echinoidea 



Example of the Class — Strongylacentrotus 

 -Class 4. The Holothuroidea 



Example of the Class — Holothiiria edulis 

 Class 5. The Crinoidea 



Example of the Class — Autidon 



157 

 '57 

 '57 

 169 

 169 

 170 

 170 

 J 73 

 r 73 

 •74 

 J 74 



SECTION VIII 



ROTIFERA, POLYZOA, AND BRACHIOPODA . 

 Class I. Rotifera 



Example of the Class — Brachionus rubens 

 Class 2. Polyzoa 



Example of the Class — Bugula avicularia 

 Class 3. Brachiopoda 



Example of the Class — Magcllama flavescens 



178 

 178 

 178 



SECTION IX 



Phylum Annulata .... 



Class 1. The Chaetopoda .... 



Example of the Class — Nereis dumerilii . 

 Class 2. The Hirudinea .... 



Example of the Class — Hiritdo medicinalis 



18S 

 189 

 203 

 203 



SECTION X 



Phylum Arthropoda 



Class 1 . The Crustacea 



Example of the Class — .h/acus flitviatihs 

 Class 2. The Onychophora 



Example of the Class — Peripatus 



212 



213 

 213 

 236 



236 



