114 ' THE DEPTHS OF THE SEA, (CHAP. IL. 
the corticate type, though it differs from all the other 
known members of the order in being supported on a 
long symmetrical stalk formed, as Professor Lovén 
has shown, of sheaves of short spicules bound together 
Fiu, 13.—Stylocordyla borealis, Loven (Sp ). Natural size. (No. 64.) 
by horny cement. A tuft of delicate fibres fixes the 
base of the stem in its position. Professor Oscar 
Schmidt, in his ‘Outline of the Sponge Fauna of 
the Atlantic,” refers this form to his genus Cometella, 
