EXPLANATION OF PLATE XIV. 



FIGURE 71. Clymeuella torquata, (p. 608;) natural size; lateral view. 

 72. The same ; head arid extended proboscis ; front view. 

 73. The same ; posterior and caudal segments ; dorsal view. 

 74. Sternaspis fossor, (p. 606 ;) dorsal view. 

 75. Trophonia affinis, (p. 605 ;) anterior portion ; dorsal view. 

 76. Authostoma robustum, (p. 597 ;) anterior portion of^body, head, and ex- 

 tended proboscis ; dorsal view, natural size. 

 77. Spio s*etosa, (p. 602 ;) anterior segments and head ; side view ; only one of 



the two large tentacles is represented. 

 78. Polydora ciliatum, (p. 603;) anterior and posterior parts ; dorsal view. 



(Figures 71, 72, 73, 75, 76, were drawn from nature by J. H. Emerton ; 74, by A. E. Verrill ; 77, 78, were 

 copied from A. Agassiz.) 



