MUSEUM OF COMPARATIVE ZOOLOGY. 287 



Fig. 128. Ophiobrachion uncinates, from below; \. 

 Fig. 129. " " from above ; \. 



Fig. 130. " " ann-joiuts, profile. The arm-books have all 



fallen, leaviug their little mamelons ; \. 

 Fig. 131. " " an arm-hook ; f . 



Fig. 132. Ophiocreas spinulosus, from below ; f . 

 Fig. 133. " " from above; ?. 



Fig. 134. " " joints near base of arm, profile ; f . 



Fig. 135. " " joints near tip of arm, profile ; f . 



Fig. 136. Astronyx Loveni (young), from below ; ty. 

 Fig. 137. " " from above ; ty. 



Fig. 138. " " arm-joints, profile ; ty. 



