86 G Canadian Arctic Expeditioti, 1913-1918 



Plate XVIIl. 



Figs. 1, 2. Painalula aculvata (Sars) Dan. A dcop-sca variety (var. laxa, new) having the pinna- unusually 

 long and far apart, and "with fewL-r and more separated calicles than in the ordinary kind; natural 

 size, from photographs. 



