464 THE ANATOMY OF INVERTEBRATED ANIMALS, 



ized soft parts are retained, show that the arms were pro- 

 vided with hooks, and that there was a large ink-bag/ 



Fig. 1H. — Bekinnitfis. with the remains of the body of the animal. (From a 

 specimen in the Museum of Practical Geology.)— a, arms with hooks ; b, head; 

 c, ink-bag; d, phragmocone ; c, guard. 



1 ITuxlev, " The Structure of Belemnites." (" Memoirs of the Geological 

 Survey of the United Kingdom," 1864.) 



