CHAP, m.] THE CRUISES OF THE 'PORCUPINE.' 



129 



frequently entangled in large numbers on the loose 

 hemp. This group seems to be specially characteristic 

 of the sea at an arctic temperature. They are re- 

 ported of almost incredible size, thirty centimetres or 

 so across, from the late German and Swedish polar 

 expeditions, and they have also been found enor- 



FiG. 22. — JTympftoii rt6j/.^.'!r)r«m, Norman. Slightly enlarged (No. 56. ) 



mously large in deep water in the antarctic regions. 

 They often come up clinging to the sounding line. 



The Moilusca, which in the preceding cruises 

 usually constituted the principal results of the 

 dredging, were here quite subordinate as regards 

 both number and rariety to the groups already 



K 



