304 



THE VOYAGE OF H.M.S. CHALLENGER. 



calcareous deposit. This is the case with the individuals represented in figs. 11G and 117, 

 and it would seem that under these circumstances the animal practically becomes a free 



Fig. 116.— I'entacriaus maclearanus, Wyv. Thorns. 



Flo. 117. — Peutacrimis wyviUe t/iomsoni, Jeffreys. 



Crinoid like a Feather-star, with the power of swimming about and temporarily fixing 

 itself again ; while if the trailing stem gets caught or injured in any way, it can be 



