CONTENTS. 



Intkoddction, . 

 Description, . 



Ccencecium, 



Polypides, 



Buccal Disk, 



Branchial Plumes, 



Post-oral Lamella, 



Digestive System, 



Body-wall, 



Muscular System and Pedicle, 



Nervous System, 



Sense-Organs, . 



Eeproductive Organs, . 



Budding, 

 Homologies, . 

 Appendix, by Sidney F. Harmer, B.A., 



B.Sc, 



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