EXPLANATION OF PLATE XVI. 



PiGURE 82. — Amphitrite ornata, (p. 613 ;) lateral view, somewhat reduced, from a 

 living specimen. 

 83. — Ampliarete gracilis, (p. 612;) lateral view. 

 84. — Euchone elegans, (p. 618 ;) lateral view. 



85. — Polycirrus eximius, (p. 616 ;) dorsal view of a living specimen creeping 

 by means of its tentacles ; natural size. 

 (Fig^ares 82, 84, 85, were drawn fiom nature by A. E. Verrill ; 83, by J- H. Emerton.) 



