XIV TABLE OF CONTENTS 



Phylum Brachiopoda , page 537 



Class Ecardines . 542 



Class Testicardines 542 



Phylum Chaetognatha 542 



Phylum Phoronidea 545 



CHAPTER XVIII 



Phylum Echinodermata 547 

 [Subphylum Eleutherozoa] 



Class Asteroidea 557 



Class Ophiuroidea 562 



Class Echinoidea 564 



Order Endocyclica 571 



Order Clypeastroida 571 



Order Spatangoida 571 



Class Holothuroidea 572 



Order Aspidochirotae 575 



Order Pelagothurida 577 



Order Elasipoda 577 



Order Dendrochirotae 577 



Order Molpadida 577 



Order Synaptida (Paractinopoda) 577 



[Subphylum Pelmatozoa] 



Class Crinoidea 577 



Class Amphoridea 582 



Class Carpoidea 582 



Class Thecoidea (Edrioasteroidea) 582 



Class Cystoidea 582 

 [Order Diploporida] 

 [Order Rhombifera] 



Class Blastoidea 582 



CHAPTER XIX 



Phylum Chordata ' 583 



Subphylum Enteropneusta (Hemichorda) 585 

 [Class Balanoglossida] 

 [Class Pterobranchia] 



Subphylum Tunicata (Urochorda) 590 



Class Larvacea 601 



Class Ascidiacea 602 



Class Thaliacea 603 



Order Pyrosomatida (Luciae) 607 



Order Salpida (Hemimyaria) 607 



Order Doliolida (Cyclomyaria) 607 

 [Subphylum Cephalochorda] 

 [Subphylum Vertebrata] 



