72 G 



Canadian Arctic Expedition, 1913-1918 



PLATE XII. 



Ptilosarcus gurneyi Gray. Photographs of a large specimen from Orca, Alaska. 

 Fig. 1. Back side, to show large areas of siphonozooids. 

 Fig. 2. The same specimen, front view of polypiferous side. 

 Both figures about f natural size. 



