EXPLANATION OF PLATE XVI. 



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

 living specimen. 

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

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



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

 hj means of its tentacles ; natural size. 

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



