CONTENTS. 



Preface, .... 



Introduction, 

 History, 

 Bibliography, . 

 Anatomy, 



Description of the Species, &c., . 

 Ascidiacea, 



Ascidise Salpiformes, . 

 Pyrosomatidse, . 

 Pyrosoma, 



Thaliacea, 



Cyclomyaria, . 

 Doliolidae, 

 Doliolum, 



Hemimyaria, . 

 Salpidse, 



Salpa, 

 Cyclosalpa, 

 Octacnemidse, . 

 Odacnemus, . 



Larvacea, 



Appendiculariidae, 

 Appendicularia, ^c, 



Geographical Distribution, 



Bathymetrical Distribution, 



Eelations and Phylogeny of the Tunicata, 



Appendices, ..... 

 Appendix A., . 

 Appendix B., . 



Index, ..... 



Explanation of the Plates, 



Plates. 



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51 

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 86 

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96 



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